Home / 129,319.31-178,542.63-88,551.65

Finding the Fourth Proportional to 129,319.31, 178,542.63 and 88,551.65

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Solution

The fourth proportional to 129,319.31, 178,542.63 and 88,551.65 is: 122,257.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,319.31 : 178,542.63 = 88,551.65 : x
  2. Step 2: Convert to fraction form
    129,319.31/178,542.63 = 88,551.65/x
  3. Step 3: Cross multiply
    129,319.31x = 178,542.63 × 88,551.65
  4. Step 4: Simplify right side
    129,319.31x = 15,810,244,928.20
  5. Step 5: Solve for x
    x = 15,810,244,928.20/129,319.31
  6. Step 6: Final answer
    x = 122,257.42

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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.