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Finding the Fourth Proportional to 100,026.59, 138,031.11 and 54,695.57

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Solution

The fourth proportional to 100,026.59, 138,031.11 and 54,695.57 is: 75,476.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,026.59 : 138,031.11 = 54,695.57 : x
  2. Step 2: Convert to fraction form
    100,026.59/138,031.11 = 54,695.57/x
  3. Step 3: Cross multiply
    100,026.59x = 138,031.11 × 54,695.57
  4. Step 4: Simplify right side
    100,026.59x = 7,549,690,239.18
  5. Step 5: Solve for x
    x = 7,549,690,239.18/100,026.59
  6. Step 6: Final answer
    x = 75,476.83

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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.