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Finding the Fourth Proportional to 100,337.59, 138,472.10 and 55,625.59

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Solution

The fourth proportional to 100,337.59, 138,472.10 and 55,625.59 is: 76,766.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,337.59 : 138,472.10 = 55,625.59 : x
  2. Step 2: Convert to fraction form
    100,337.59/138,472.10 = 55,625.59/x
  3. Step 3: Cross multiply
    100,337.59x = 138,472.10 × 55,625.59
  4. Step 4: Simplify right side
    100,337.59x = 7,702,592,261.04
  5. Step 5: Solve for x
    x = 7,702,592,261.04/100,337.59
  6. Step 6: Final answer
    x = 76,766.77

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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.