Home / 129,302.83-178,434.50-71,939.24

Finding the Fourth Proportional to 129,302.83, 178,434.50 and 71,939.24

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Solution

The fourth proportional to 129,302.83, 178,434.50 and 71,939.24 is: 99,274.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,302.83 : 178,434.50 = 71,939.24 : x
  2. Step 2: Convert to fraction form
    129,302.83/178,434.50 = 71,939.24/x
  3. Step 3: Cross multiply
    129,302.83x = 178,434.50 × 71,939.24
  4. Step 4: Simplify right side
    129,302.83x = 12,836,441,737.04
  5. Step 5: Solve for x
    x = 12,836,441,737.04/129,302.83
  6. Step 6: Final answer
    x = 99,274.25

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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.