Home / 102,517.72-153,781.21-31,435.17

Finding the Fourth Proportional to 102,517.72, 153,781.21 and 31,435.17

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Solution

The fourth proportional to 102,517.72, 153,781.21 and 31,435.17 is: 47,154.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,517.72 : 153,781.21 = 31,435.17 : x
  2. Step 2: Convert to fraction form
    102,517.72/153,781.21 = 31,435.17/x
  3. Step 3: Cross multiply
    102,517.72x = 153,781.21 × 31,435.17
  4. Step 4: Simplify right side
    102,517.72x = 4,834,138,479.16
  5. Step 5: Solve for x
    x = 4,834,138,479.16/102,517.72
  6. Step 6: Final answer
    x = 47,154.17

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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.