Home / 129,947.28-179,328.75-76,233.21

Finding the Fourth Proportional to 129,947.28, 179,328.75 and 76,233.21

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Solution

The fourth proportional to 129,947.28, 179,328.75 and 76,233.21 is: 105,202.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,947.28 : 179,328.75 = 76,233.21 : x
  2. Step 2: Convert to fraction form
    129,947.28/179,328.75 = 76,233.21/x
  3. Step 3: Cross multiply
    129,947.28x = 179,328.75 × 76,233.21
  4. Step 4: Simplify right side
    129,947.28x = 13,670,805,876.62
  5. Step 5: Solve for x
    x = 13,670,805,876.62/129,947.28
  6. Step 6: Final answer
    x = 105,202.71

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1.5x scale

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.