Home / 121,393,807.20-182,090,710.80-39,520,400.40

Finding the Fourth Proportional to 121,393,807.20, 182,090,710.80 and 39,520,400.40

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Solution

The fourth proportional to 121,393,807.20, 182,090,710.80 and 39,520,400.40 is: 59,280,600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,393,807.20 : 182,090,710.80 = 39,520,400.40 : x
  2. Step 2: Convert to fraction form
    121,393,807.20/182,090,710.80 = 39,520,400.40/x
  3. Step 3: Cross multiply
    121,393,807.20x = 182,090,710.80 × 39,520,400.40
  4. Step 4: Simplify right side
    121,393,807.20x = 7,196,297,799,936,605
  5. Step 5: Solve for x
    x = 7,196,297,799,936,605/121,393,807.20
  6. Step 6: Final answer
    x = 59,280,600.60

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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.