Home / 129,552.94-178,785.39-72,966.34

Finding the Fourth Proportional to 129,552.94, 178,785.39 and 72,966.34

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Solution

The fourth proportional to 129,552.94, 178,785.39 and 72,966.34 is: 100,694.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,552.94 : 178,785.39 = 72,966.34 : x
  2. Step 2: Convert to fraction form
    129,552.94/178,785.39 = 72,966.34/x
  3. Step 3: Cross multiply
    129,552.94x = 178,785.39 × 72,966.34
  4. Step 4: Simplify right side
    129,552.94x = 13,045,315,553.77
  5. Step 5: Solve for x
    x = 13,045,315,553.77/129,552.94
  6. Step 6: Final answer
    x = 100,694.86

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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.