Home / 78,732,140.20-118,098,210.30-21,222,350.80

Finding the Fourth Proportional to 78,732,140.20, 118,098,210.30 and 21,222,350.80

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Solution

The fourth proportional to 78,732,140.20, 118,098,210.30 and 21,222,350.80 is: 31,833,526.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,140.20 : 118,098,210.30 = 21,222,350.80 : x
  2. Step 2: Convert to fraction form
    78,732,140.20/118,098,210.30 = 21,222,350.80/x
  3. Step 3: Cross multiply
    78,732,140.20x = 118,098,210.30 × 21,222,350.80
  4. Step 4: Simplify right side
    78,732,140.20x = 2,506,321,647,838,773.50
  5. Step 5: Solve for x
    x = 2,506,321,647,838,773.50/78,732,140.20
  6. Step 6: Final answer
    x = 31,833,526.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.