Home / 126,398.98-189,040.76-112,456.86

Finding the Fourth Proportional to 126,398.98, 189,040.76 and 112,456.86

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Solution

The fourth proportional to 126,398.98, 189,040.76 and 112,456.86 is: 168,189.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,398.98 : 189,040.76 = 112,456.86 : x
  2. Step 2: Convert to fraction form
    126,398.98/189,040.76 = 112,456.86/x
  3. Step 3: Cross multiply
    126,398.98x = 189,040.76 × 112,456.86
  4. Step 4: Simplify right side
    126,398.98x = 21,258,930,281.61
  5. Step 5: Solve for x
    x = 21,258,930,281.61/126,398.98
  6. Step 6: Final answer
    x = 168,189.10

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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.