Home / 90,742.14-136,124.15-38,144.79

Finding the Fourth Proportional to 90,742.14, 136,124.15 and 38,144.79

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Solution

The fourth proportional to 90,742.14, 136,124.15 and 38,144.79 is: 57,221.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,742.14 : 136,124.15 = 38,144.79 : x
  2. Step 2: Convert to fraction form
    90,742.14/136,124.15 = 38,144.79/x
  3. Step 3: Cross multiply
    90,742.14x = 136,124.15 × 38,144.79
  4. Step 4: Simplify right side
    90,742.14x = 5,192,426,924.95
  5. Step 5: Solve for x
    x = 5,192,426,924.95/90,742.14
  6. Step 6: Final answer
    x = 57,221.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.