Home / 126,020.70-189,031.05-125,145.90

Finding the Fourth Proportional to 126,020.70, 189,031.05 and 125,145.90

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Solution

The fourth proportional to 126,020.70, 189,031.05 and 125,145.90 is: 187,718.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,020.70 : 189,031.05 = 125,145.90 : x
  2. Step 2: Convert to fraction form
    126,020.70/189,031.05 = 125,145.90/x
  3. Step 3: Cross multiply
    126,020.70x = 189,031.05 × 125,145.90
  4. Step 4: Simplify right side
    126,020.70x = 23,656,460,880.20
  5. Step 5: Solve for x
    x = 23,656,460,880.20/126,020.70
  6. Step 6: Final answer
    x = 187,718.85

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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.