Home / 126,438.90-189,512.28-47,502.78

Finding the Fourth Proportional to 126,438.90, 189,512.28 and 47,502.78

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Solution

The fourth proportional to 126,438.90, 189,512.28 and 47,502.78 is: 71,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,438.90 : 189,512.28 = 47,502.78 : x
  2. Step 2: Convert to fraction form
    126,438.90/189,512.28 = 47,502.78/x
  3. Step 3: Cross multiply
    126,438.90x = 189,512.28 × 47,502.78
  4. Step 4: Simplify right side
    126,438.90x = 9,002,360,144.14
  5. Step 5: Solve for x
    x = 9,002,360,144.14/126,438.90
  6. Step 6: Final answer
    x = 71,199.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.