Home / 126,002.40-189,003.60-102,382.80

Finding the Fourth Proportional to 126,002.40, 189,003.60 and 102,382.80

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Solution

The fourth proportional to 126,002.40, 189,003.60 and 102,382.80 is: 153,574.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,002.40 : 189,003.60 = 102,382.80 : x
  2. Step 2: Convert to fraction form
    126,002.40/189,003.60 = 102,382.80/x
  3. Step 3: Cross multiply
    126,002.40x = 189,003.60 × 102,382.80
  4. Step 4: Simplify right side
    126,002.40x = 19,350,717,778.08
  5. Step 5: Solve for x
    x = 19,350,717,778.08/126,002.40
  6. Step 6: Final answer
    x = 153,574.20

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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.