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Finding the Fourth Proportional to 138,001.30, 207,001.96 and 138,001.30

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Solution

The fourth proportional to 138,001.30, 207,001.96 and 138,001.30 is: 207,001.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,001.30 : 207,001.96 = 138,001.30 : x
  2. Step 2: Convert to fraction form
    138,001.30/207,001.96 = 138,001.30/x
  3. Step 3: Cross multiply
    138,001.30x = 207,001.96 × 138,001.30
  4. Step 4: Simplify right side
    138,001.30x = 28,566,539,582.55
  5. Step 5: Solve for x
    x = 28,566,539,582.55/138,001.30
  6. Step 6: Final answer
    x = 207,001.96

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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.