Home / 79,185,724.20-118,778,586.30-66,431,140.20

Finding the Fourth Proportional to 79,185,724.20, 118,778,586.30 and 66,431,140.20

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Solution

The fourth proportional to 79,185,724.20, 118,778,586.30 and 66,431,140.20 is: 99,646,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,185,724.20 : 118,778,586.30 = 66,431,140.20 : x
  2. Step 2: Convert to fraction form
    79,185,724.20/118,778,586.30 = 66,431,140.20/x
  3. Step 3: Cross multiply
    79,185,724.20x = 118,778,586.30 × 66,431,140.20
  4. Step 4: Simplify right side
    79,185,724.20x = 7,890,596,919,253,099
  5. Step 5: Solve for x
    x = 7,890,596,919,253,099/79,185,724.20
  6. Step 6: Final answer
    x = 99,646,710.30

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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.