Home / 138,609.90-207,931.32-49,856.04

Finding the Fourth Proportional to 138,609.90, 207,931.32 and 49,856.04

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Solution

The fourth proportional to 138,609.90, 207,931.32 and 49,856.04 is: 74,789.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,609.90 : 207,931.32 = 49,856.04 : x
  2. Step 2: Convert to fraction form
    138,609.90/207,931.32 = 49,856.04/x
  3. Step 3: Cross multiply
    138,609.90x = 207,931.32 × 49,856.04
  4. Step 4: Simplify right side
    138,609.90x = 10,366,632,207.17
  5. Step 5: Solve for x
    x = 10,366,632,207.17/138,609.90
  6. Step 6: Final answer
    x = 74,789.98

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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.