Home / 129,192.54-178,284.15-72,613.50

Finding the Fourth Proportional to 129,192.54, 178,284.15 and 72,613.50

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Solution

The fourth proportional to 129,192.54, 178,284.15 and 72,613.50 is: 100,205.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,192.54 : 178,284.15 = 72,613.50 : x
  2. Step 2: Convert to fraction form
    129,192.54/178,284.15 = 72,613.50/x
  3. Step 3: Cross multiply
    129,192.54x = 178,284.15 × 72,613.50
  4. Step 4: Simplify right side
    129,192.54x = 12,945,836,126.03
  5. Step 5: Solve for x
    x = 12,945,836,126.03/129,192.54
  6. Step 6: Final answer
    x = 100,205.76

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1.5x scale

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.