Home / 99,403.68-137,178.72-54,082.56

Finding the Fourth Proportional to 99,403.68, 137,178.72 and 54,082.56

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Solution

The fourth proportional to 99,403.68, 137,178.72 and 54,082.56 is: 74,634.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,403.68 : 137,178.72 = 54,082.56 : x
  2. Step 2: Convert to fraction form
    99,403.68/137,178.72 = 54,082.56/x
  3. Step 3: Cross multiply
    99,403.68x = 137,178.72 × 54,082.56
  4. Step 4: Simplify right side
    99,403.68x = 7,418,976,355.12
  5. Step 5: Solve for x
    x = 7,418,976,355.12/99,403.68
  6. Step 6: Final answer
    x = 74,634.83

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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.