Home / 126,456.12-189,679.80-31,687.13

Finding the Fourth Proportional to 126,456.12, 189,679.80 and 31,687.13

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Solution

The fourth proportional to 126,456.12, 189,679.80 and 31,687.13 is: 47,529.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,456.12 : 189,679.80 = 31,687.13 : x
  2. Step 2: Convert to fraction form
    126,456.12/189,679.80 = 31,687.13/x
  3. Step 3: Cross multiply
    126,456.12x = 189,679.80 × 31,687.13
  4. Step 4: Simplify right side
    126,456.12x = 6,010,408,480.97
  5. Step 5: Solve for x
    x = 6,010,408,480.97/126,456.12
  6. Step 6: Final answer
    x = 47,529.60

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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.