Home / 129,896.71-179,238.24-78,882.91

Finding the Fourth Proportional to 129,896.71, 179,238.24 and 78,882.91

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Solution

The fourth proportional to 129,896.71, 179,238.24 and 78,882.91 is: 108,846.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,896.71 : 179,238.24 = 78,882.91 : x
  2. Step 2: Convert to fraction form
    129,896.71/179,238.24 = 78,882.91/x
  3. Step 3: Cross multiply
    129,896.71x = 179,238.24 × 78,882.91
  4. Step 4: Simplify right side
    129,896.71x = 14,138,833,954.48
  5. Step 5: Solve for x
    x = 14,138,833,954.48/129,896.71
  6. Step 6: Final answer
    x = 108,846.74

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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.