Home / 141,438.52-195,190.38-77,781.88

Finding the Fourth Proportional to 141,438.52, 195,190.38 and 77,781.88

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Solution

The fourth proportional to 141,438.52, 195,190.38 and 77,781.88 is: 107,341.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,438.52 : 195,190.38 = 77,781.88 : x
  2. Step 2: Convert to fraction form
    141,438.52/195,190.38 = 77,781.88/x
  3. Step 3: Cross multiply
    141,438.52x = 195,190.38 × 77,781.88
  4. Step 4: Simplify right side
    141,438.52x = 15,182,274,714.31
  5. Step 5: Solve for x
    x = 15,182,274,714.31/141,438.52
  6. Step 6: Final answer
    x = 107,341.87

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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.