Home / 127,540.08-191,223.54-71,418.78

Finding the Fourth Proportional to 127,540.08, 191,223.54 and 71,418.78

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Solution

The fourth proportional to 127,540.08, 191,223.54 and 71,418.78 is: 107,079.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,540.08 : 191,223.54 = 71,418.78 : x
  2. Step 2: Convert to fraction form
    127,540.08/191,223.54 = 71,418.78/x
  3. Step 3: Cross multiply
    127,540.08x = 191,223.54 × 71,418.78
  4. Step 4: Simplify right side
    127,540.08x = 13,656,951,934.08
  5. Step 5: Solve for x
    x = 13,656,951,934.08/127,540.08
  6. Step 6: Final answer
    x = 107,079.69

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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.