Home / 129,965.82-179,354.19-76,251.72

Finding the Fourth Proportional to 129,965.82, 179,354.19 and 76,251.72

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Solution

The fourth proportional to 129,965.82, 179,354.19 and 76,251.72 is: 105,228.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,965.82 : 179,354.19 = 76,251.72 : x
  2. Step 2: Convert to fraction form
    129,965.82/179,354.19 = 76,251.72/x
  3. Step 3: Cross multiply
    129,965.82x = 179,354.19 × 76,251.72
  4. Step 4: Simplify right side
    129,965.82x = 13,676,065,476.71
  5. Step 5: Solve for x
    x = 13,676,065,476.71/129,965.82
  6. Step 6: Final answer
    x = 105,228.17

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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.