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Finding the Fourth Proportional to 101,294.68, 139,876.32 and 63,119.38

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Solution

The fourth proportional to 101,294.68, 139,876.32 and 63,119.38 is: 87,160.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,294.68 : 139,876.32 = 63,119.38 : x
  2. Step 2: Convert to fraction form
    101,294.68/139,876.32 = 63,119.38/x
  3. Step 3: Cross multiply
    101,294.68x = 139,876.32 × 63,119.38
  4. Step 4: Simplify right side
    101,294.68x = 8,828,906,595.08
  5. Step 5: Solve for x
    x = 8,828,906,595.08/101,294.68
  6. Step 6: Final answer
    x = 87,160.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.