Home / 129,949.46-179,331.76-76,235.40

Finding the Fourth Proportional to 129,949.46, 179,331.76 and 76,235.40

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Solution

The fourth proportional to 129,949.46, 179,331.76 and 76,235.40 is: 105,205.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,949.46 : 179,331.76 = 76,235.40 : x
  2. Step 2: Convert to fraction form
    129,949.46/179,331.76 = 76,235.40/x
  3. Step 3: Cross multiply
    129,949.46x = 179,331.76 × 76,235.40
  4. Step 4: Simplify right side
    129,949.46x = 13,671,428,456.30
  5. Step 5: Solve for x
    x = 13,671,428,456.30/129,949.46
  6. Step 6: Final answer
    x = 105,205.74

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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.