Home / 138,001.10-207,001.65-131,440.10

Finding the Fourth Proportional to 138,001.10, 207,001.65 and 131,440.10

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Solution

The fourth proportional to 138,001.10, 207,001.65 and 131,440.10 is: 197,160.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,001.10 : 207,001.65 = 131,440.10 : x
  2. Step 2: Convert to fraction form
    138,001.10/207,001.65 = 131,440.10/x
  3. Step 3: Cross multiply
    138,001.10x = 207,001.65 × 131,440.10
  4. Step 4: Simplify right side
    138,001.10x = 27,208,317,576.17
  5. Step 5: Solve for x
    x = 27,208,317,576.17/138,001.10
  6. Step 6: Final answer
    x = 197,160.15

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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.