Home / 99,679.25-137,560.68-54,359.71

Finding the Fourth Proportional to 99,679.25, 137,560.68 and 54,359.71

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Solution

The fourth proportional to 99,679.25, 137,560.68 and 54,359.71 is: 75,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,679.25 : 137,560.68 = 54,359.71 : x
  2. Step 2: Convert to fraction form
    99,679.25/137,560.68 = 54,359.71/x
  3. Step 3: Cross multiply
    99,679.25x = 137,560.68 × 54,359.71
  4. Step 4: Simplify right side
    99,679.25x = 7,477,758,672.20
  5. Step 5: Solve for x
    x = 7,477,758,672.20/99,679.25
  6. Step 6: Final answer
    x = 75,018.21

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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.