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Finding the Fourth Proportional to 99,753.76, 137,663.51 and 54,434.23

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Solution

The fourth proportional to 99,753.76, 137,663.51 and 54,434.23 is: 75,121.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,753.76 : 137,663.51 = 54,434.23 : x
  2. Step 2: Convert to fraction form
    99,753.76/137,663.51 = 54,434.23/x
  3. Step 3: Cross multiply
    99,753.76x = 137,663.51 × 54,434.23
  4. Step 4: Simplify right side
    99,753.76x = 7,493,607,165.95
  5. Step 5: Solve for x
    x = 7,493,607,165.95/99,753.76
  6. Step 6: Final answer
    x = 75,121.05

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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.