Home / 141,805.67-195,691.19-78,143.31

Finding the Fourth Proportional to 141,805.67, 195,691.19 and 78,143.31

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Solution

The fourth proportional to 141,805.67, 195,691.19 and 78,143.31 is: 107,837.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,805.67 : 195,691.19 = 78,143.31 : x
  2. Step 2: Convert to fraction form
    141,805.67/195,691.19 = 78,143.31/x
  3. Step 3: Cross multiply
    141,805.67x = 195,691.19 × 78,143.31
  4. Step 4: Simplify right side
    141,805.67x = 15,291,956,933.72
  5. Step 5: Solve for x
    x = 15,291,956,933.72/141,805.67
  6. Step 6: Final answer
    x = 107,837.42

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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.