Home / 126,387.72-189,581.04-51,491.16

Finding the Fourth Proportional to 126,387.72, 189,581.04 and 51,491.16

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Solution

The fourth proportional to 126,387.72, 189,581.04 and 51,491.16 is: 77,236.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,387.72 : 189,581.04 = 51,491.16 : x
  2. Step 2: Convert to fraction form
    126,387.72/189,581.04 = 51,491.16/x
  3. Step 3: Cross multiply
    126,387.72x = 189,581.04 × 51,491.16
  4. Step 4: Simplify right side
    126,387.72x = 9,761,747,663.61
  5. Step 5: Solve for x
    x = 9,761,747,663.61/126,387.72
  6. Step 6: Final answer
    x = 77,236.52

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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.