Home / 197,147.46-271,968.66-129,135

Finding the Fourth Proportional to 197,147.46, 271,968.66 and 129,135

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Solution

The fourth proportional to 197,147.46, 271,968.66 and 129,135 is: 178,144.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,147.46 : 271,968.66 = 129,135 : x
  2. Step 2: Convert to fraction form
    197,147.46/271,968.66 = 129,135/x
  3. Step 3: Cross multiply
    197,147.46x = 271,968.66 × 129,135
  4. Step 4: Simplify right side
    197,147.46x = 35,120,672,909.10
  5. Step 5: Solve for x
    x = 35,120,672,909.10/197,147.46
  6. Step 6: Final answer
    x = 178,144.18

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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.