Home / 129,600.28-178,826.72-72,227.04

Finding the Fourth Proportional to 129,600.28, 178,826.72 and 72,227.04

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Solution

The fourth proportional to 129,600.28, 178,826.72 and 72,227.04 is: 99,661.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,600.28 : 178,826.72 = 72,227.04 : x
  2. Step 2: Convert to fraction form
    129,600.28/178,826.72 = 72,227.04/x
  3. Step 3: Cross multiply
    129,600.28x = 178,826.72 × 72,227.04
  4. Step 4: Simplify right side
    129,600.28x = 12,916,124,658.51
  5. Step 5: Solve for x
    x = 12,916,124,658.51/129,600.28
  6. Step 6: Final answer
    x = 99,661.24

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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.