Home / 126,165.20-189,018.16-73,414.72

Finding the Fourth Proportional to 126,165.20, 189,018.16 and 73,414.72

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Solution

The fourth proportional to 126,165.20, 189,018.16 and 73,414.72 is: 109,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,165.20 : 189,018.16 = 73,414.72 : x
  2. Step 2: Convert to fraction form
    126,165.20/189,018.16 = 73,414.72/x
  3. Step 3: Cross multiply
    126,165.20x = 189,018.16 × 73,414.72
  4. Step 4: Simplify right side
    126,165.20x = 13,876,715,291.32
  5. Step 5: Solve for x
    x = 13,876,715,291.32/126,165.20
  6. Step 6: Final answer
    x = 109,988.45

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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.