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Finding the Fourth Proportional to 137,301,601.80, 205,952,402.70 and 72,580,398.60

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Solution

The fourth proportional to 137,301,601.80, 205,952,402.70 and 72,580,398.60 is: 108,870,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,301,601.80 : 205,952,402.70 = 72,580,398.60 : x
  2. Step 2: Convert to fraction form
    137,301,601.80/205,952,402.70 = 72,580,398.60/x
  3. Step 3: Cross multiply
    137,301,601.80x = 205,952,402.70 × 72,580,398.60
  4. Step 4: Simplify right side
    137,301,601.80x = 14,948,107,480,593,714
  5. Step 5: Solve for x
    x = 14,948,107,480,593,714/137,301,601.80
  6. Step 6: Final answer
    x = 108,870,597.90

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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.