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Finding the Fourth Proportional to 100,593.59, 138,818.49 and 55,272.07

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Solution

The fourth proportional to 100,593.59, 138,818.49 and 55,272.07 is: 76,275.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,593.59 : 138,818.49 = 55,272.07 : x
  2. Step 2: Convert to fraction form
    100,593.59/138,818.49 = 55,272.07/x
  3. Step 3: Cross multiply
    100,593.59x = 138,818.49 × 55,272.07
  4. Step 4: Simplify right side
    100,593.59x = 7,672,784,602.48
  5. Step 5: Solve for x
    x = 7,672,784,602.48/100,593.59
  6. Step 6: Final answer
    x = 76,275.08

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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.