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Finding the Fourth Proportional to 100,195.52, 138,269.60 and 57,753.76

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Solution

The fourth proportional to 100,195.52, 138,269.60 and 57,753.76 is: 79,700.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,195.52 : 138,269.60 = 57,753.76 : x
  2. Step 2: Convert to fraction form
    100,195.52/138,269.60 = 57,753.76/x
  3. Step 3: Cross multiply
    100,195.52x = 138,269.60 × 57,753.76
  4. Step 4: Simplify right side
    100,195.52x = 7,985,589,293.70
  5. Step 5: Solve for x
    x = 7,985,589,293.70/100,195.52
  6. Step 6: Final answer
    x = 79,700.06

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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.