Home / 126,123.02-189,179.06-31,351.20

Finding the Fourth Proportional to 126,123.02, 189,179.06 and 31,351.20

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Solution

The fourth proportional to 126,123.02, 189,179.06 and 31,351.20 is: 47,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,123.02 : 189,179.06 = 31,351.20 : x
  2. Step 2: Convert to fraction form
    126,123.02/189,179.06 = 31,351.20/x
  3. Step 3: Cross multiply
    126,123.02x = 189,179.06 × 31,351.20
  4. Step 4: Simplify right side
    126,123.02x = 5,930,990,545.87
  5. Step 5: Solve for x
    x = 5,930,990,545.87/126,123.02
  6. Step 6: Final answer
    x = 47,025.44

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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.