Home / 129,947.46-179,329-76,233.40

Finding the Fourth Proportional to 129,947.46, 179,329 and 76,233.40

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Solution

The fourth proportional to 129,947.46, 179,329 and 76,233.40 is: 105,202.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,947.46 : 179,329 = 76,233.40 : x
  2. Step 2: Convert to fraction form
    129,947.46/179,329 = 76,233.40/x
  3. Step 3: Cross multiply
    129,947.46x = 179,329 × 76,233.40
  4. Step 4: Simplify right side
    129,947.46x = 13,670,859,388.60
  5. Step 5: Solve for x
    x = 13,670,859,388.60/129,947.46
  6. Step 6: Final answer
    x = 105,202.98

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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.