Home / 129,194.52-178,269.50-71,829.24

Finding the Fourth Proportional to 129,194.52, 178,269.50 and 71,829.24

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Solution

The fourth proportional to 129,194.52, 178,269.50 and 71,829.24 is: 99,113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,194.52 : 178,269.50 = 71,829.24 : x
  2. Step 2: Convert to fraction form
    129,194.52/178,269.50 = 71,829.24/x
  3. Step 3: Cross multiply
    129,194.52x = 178,269.50 × 71,829.24
  4. Step 4: Simplify right side
    129,194.52x = 12,804,962,700.18
  5. Step 5: Solve for x
    x = 12,804,962,700.18/129,194.52
  6. Step 6: Final answer
    x = 99,113.82

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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.