Home / 99,479.62-137,332.59-76,767.58

Finding the Fourth Proportional to 99,479.62, 137,332.59 and 76,767.58

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Solution

The fourth proportional to 99,479.62, 137,332.59 and 76,767.58 is: 105,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,479.62 : 137,332.59 = 76,767.58 : x
  2. Step 2: Convert to fraction form
    99,479.62/137,332.59 = 76,767.58/x
  3. Step 3: Cross multiply
    99,479.62x = 137,332.59 × 76,767.58
  4. Step 4: Simplify right side
    99,479.62x = 10,542,690,589.43
  5. Step 5: Solve for x
    x = 10,542,690,589.43/99,479.62
  6. Step 6: Final answer
    x = 105,978.40

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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.