Home / 126,728.96-174,874.11-75,731.56

Finding the Fourth Proportional to 126,728.96, 174,874.11 and 75,731.56

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Solution

The fourth proportional to 126,728.96, 174,874.11 and 75,731.56 is: 104,502.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,728.96 : 174,874.11 = 75,731.56 : x
  2. Step 2: Convert to fraction form
    126,728.96/174,874.11 = 75,731.56/x
  3. Step 3: Cross multiply
    126,728.96x = 174,874.11 × 75,731.56
  4. Step 4: Simplify right side
    126,728.96x = 13,243,488,432.73
  5. Step 5: Solve for x
    x = 13,243,488,432.73/126,728.96
  6. Step 6: Final answer
    x = 104,502.47

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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.