Home / 126,334.80-189,502.20-79,640.40

Finding the Fourth Proportional to 126,334.80, 189,502.20 and 79,640.40

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Solution

The fourth proportional to 126,334.80, 189,502.20 and 79,640.40 is: 119,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,334.80 : 189,502.20 = 79,640.40 : x
  2. Step 2: Convert to fraction form
    126,334.80/189,502.20 = 79,640.40/x
  3. Step 3: Cross multiply
    126,334.80x = 189,502.20 × 79,640.40
  4. Step 4: Simplify right side
    126,334.80x = 15,092,031,008.88
  5. Step 5: Solve for x
    x = 15,092,031,008.88/126,334.80
  6. Step 6: Final answer
    x = 119,460.60

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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.