Home / 129,600.26-178,826.72-72,227.06

Finding the Fourth Proportional to 129,600.26, 178,826.72 and 72,227.06

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Solution

The fourth proportional to 129,600.26, 178,826.72 and 72,227.06 is: 99,661.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,600.26 : 178,826.72 = 72,227.06 : x
  2. Step 2: Convert to fraction form
    129,600.26/178,826.72 = 72,227.06/x
  3. Step 3: Cross multiply
    129,600.26x = 178,826.72 × 72,227.06
  4. Step 4: Simplify right side
    129,600.26x = 12,916,128,235.04
  5. Step 5: Solve for x
    x = 12,916,128,235.04/129,600.26
  6. Step 6: Final answer
    x = 99,661.28

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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.