Home / 100,098.18-138,129.52-54,767.13

Finding the Fourth Proportional to 100,098.18, 138,129.52 and 54,767.13

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Solution

The fourth proportional to 100,098.18, 138,129.52 and 54,767.13 is: 75,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,098.18 : 138,129.52 = 54,767.13 : x
  2. Step 2: Convert to fraction form
    100,098.18/138,129.52 = 54,767.13/x
  3. Step 3: Cross multiply
    100,098.18x = 138,129.52 × 54,767.13
  4. Step 4: Simplify right side
    100,098.18x = 7,564,957,378.68
  5. Step 5: Solve for x
    x = 7,564,957,378.68/100,098.18
  6. Step 6: Final answer
    x = 75,575.37

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1.5x scale

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.