Home / 138,155.90-207,233.85-49,412.30

Finding the Fourth Proportional to 138,155.90, 207,233.85 and 49,412.30

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Solution

The fourth proportional to 138,155.90, 207,233.85 and 49,412.30 is: 74,118.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,155.90 : 207,233.85 = 49,412.30 : x
  2. Step 2: Convert to fraction form
    138,155.90/207,233.85 = 49,412.30/x
  3. Step 3: Cross multiply
    138,155.90x = 207,233.85 × 49,412.30
  4. Step 4: Simplify right side
    138,155.90x = 10,239,901,166.36
  5. Step 5: Solve for x
    x = 10,239,901,166.36/138,155.90
  6. Step 6: Final answer
    x = 74,118.45

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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.