Home / 129,836.64-179,188.20-76,123.92

Finding the Fourth Proportional to 129,836.64, 179,188.20 and 76,123.92

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Solution

The fourth proportional to 129,836.64, 179,188.20 and 76,123.92 is: 105,059.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,836.64 : 179,188.20 = 76,123.92 : x
  2. Step 2: Convert to fraction form
    129,836.64/179,188.20 = 76,123.92/x
  3. Step 3: Cross multiply
    129,836.64x = 179,188.20 × 76,123.92
  4. Step 4: Simplify right side
    129,836.64x = 13,640,508,201.74
  5. Step 5: Solve for x
    x = 13,640,508,201.74/129,836.64
  6. Step 6: Final answer
    x = 105,059.00

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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.