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Finding the Fourth Proportional to 129,382.52, 177,593.95 and 114,919.16

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Solution

The fourth proportional to 129,382.52, 177,593.95 and 114,919.16 is: 157,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,382.52 : 177,593.95 = 114,919.16 : x
  2. Step 2: Convert to fraction form
    129,382.52/177,593.95 = 114,919.16/x
  3. Step 3: Cross multiply
    129,382.52x = 177,593.95 × 114,919.16
  4. Step 4: Simplify right side
    129,382.52x = 20,408,947,555.08
  5. Step 5: Solve for x
    x = 20,408,947,555.08/129,382.52
  6. Step 6: Final answer
    x = 157,741.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.