Home / 95,077.31-142,620.57-78,406.90

Finding the Fourth Proportional to 95,077.31, 142,620.57 and 78,406.90

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Solution

The fourth proportional to 95,077.31, 142,620.57 and 78,406.90 is: 117,614.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,077.31 : 142,620.57 = 78,406.90 : x
  2. Step 2: Convert to fraction form
    95,077.31/142,620.57 = 78,406.90/x
  3. Step 3: Cross multiply
    95,077.31x = 142,620.57 × 78,406.90
  4. Step 4: Simplify right side
    95,077.31x = 11,182,436,769.93
  5. Step 5: Solve for x
    x = 11,182,436,769.93/95,077.31
  6. Step 6: Final answer
    x = 117,614.15

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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.