Home / 197,151.59-271,974.35-129,139.13

Finding the Fourth Proportional to 197,151.59, 271,974.35 and 129,139.13

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Solution

The fourth proportional to 197,151.59, 271,974.35 and 129,139.13 is: 178,149.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,151.59 : 271,974.35 = 129,139.13 : x
  2. Step 2: Convert to fraction form
    197,151.59/271,974.35 = 129,139.13/x
  3. Step 3: Cross multiply
    197,151.59x = 271,974.35 × 129,139.13
  4. Step 4: Simplify right side
    197,151.59x = 35,122,530,941.32
  5. Step 5: Solve for x
    x = 35,122,530,941.32/197,151.59
  6. Step 6: Final answer
    x = 178,149.87

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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.