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Finding the Fourth Proportional to 137,957,871.60, 206,760,972.60 and 73,292,655.60

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Solution

The fourth proportional to 137,957,871.60, 206,760,972.60 and 73,292,655.60 is: 109,845,567.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,957,871.60 : 206,760,972.60 = 73,292,655.60 : x
  2. Step 2: Convert to fraction form
    137,957,871.60/206,760,972.60 = 73,292,655.60/x
  3. Step 3: Cross multiply
    137,957,871.60x = 206,760,972.60 × 73,292,655.60
  4. Step 4: Simplify right side
    137,957,871.60x = 15,154,060,756,292,834
  5. Step 5: Solve for x
    x = 15,154,060,756,292,834/137,957,871.60
  6. Step 6: Final answer
    x = 109,845,567.93

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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.