Home / 129,570.49-178,701.54-108,793.78

Finding the Fourth Proportional to 129,570.49, 178,701.54 and 108,793.78

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Solution

The fourth proportional to 129,570.49, 178,701.54 and 108,793.78 is: 150,046.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,570.49 : 178,701.54 = 108,793.78 : x
  2. Step 2: Convert to fraction form
    129,570.49/178,701.54 = 108,793.78/x
  3. Step 3: Cross multiply
    129,570.49x = 178,701.54 × 108,793.78
  4. Step 4: Simplify right side
    129,570.49x = 19,441,616,790.85
  5. Step 5: Solve for x
    x = 19,441,616,790.85/129,570.49
  6. Step 6: Final answer
    x = 150,046.65

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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.