Home / 129,552.33-178,780.39-72,194.07

Finding the Fourth Proportional to 129,552.33, 178,780.39 and 72,194.07

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Solution

The fourth proportional to 129,552.33, 178,780.39 and 72,194.07 is: 99,626.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,552.33 : 178,780.39 = 72,194.07 : x
  2. Step 2: Convert to fraction form
    129,552.33/178,780.39 = 72,194.07/x
  3. Step 3: Cross multiply
    129,552.33x = 178,780.39 × 72,194.07
  4. Step 4: Simplify right side
    129,552.33x = 12,906,883,990.29
  5. Step 5: Solve for x
    x = 12,906,883,990.29/129,552.33
  6. Step 6: Final answer
    x = 99,626.80

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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.