Home / 197,132.46-271,947.96-129,120

Finding the Fourth Proportional to 197,132.46, 271,947.96 and 129,120

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Solution

The fourth proportional to 197,132.46, 271,947.96 and 129,120 is: 178,123.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,132.46 : 271,947.96 = 129,120 : x
  2. Step 2: Convert to fraction form
    197,132.46/271,947.96 = 129,120/x
  3. Step 3: Cross multiply
    197,132.46x = 271,947.96 × 129,120
  4. Step 4: Simplify right side
    197,132.46x = 35,113,920,595.20
  5. Step 5: Solve for x
    x = 35,113,920,595.20/197,132.46
  6. Step 6: Final answer
    x = 178,123.48

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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.