Home / 129,947.19-179,329.32-72,591.54

Finding the Fourth Proportional to 129,947.19, 179,329.32 and 72,591.54

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Solution

The fourth proportional to 129,947.19, 179,329.32 and 72,591.54 is: 100,177.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,947.19 : 179,329.32 = 72,591.54 : x
  2. Step 2: Convert to fraction form
    129,947.19/179,329.32 = 72,591.54/x
  3. Step 3: Cross multiply
    129,947.19x = 179,329.32 × 72,591.54
  4. Step 4: Simplify right side
    129,947.19x = 13,017,791,505.95
  5. Step 5: Solve for x
    x = 13,017,791,505.95/129,947.19
  6. Step 6: Final answer
    x = 100,177.55

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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.