Home / 121,306.20-181,764.90-76,853.40

Finding the Fourth Proportional to 121,306.20, 181,764.90 and 76,853.40

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Solution

The fourth proportional to 121,306.20, 181,764.90 and 76,853.40 is: 115,156.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,306.20 : 181,764.90 = 76,853.40 : x
  2. Step 2: Convert to fraction form
    121,306.20/181,764.90 = 76,853.40/x
  3. Step 3: Cross multiply
    121,306.20x = 181,764.90 × 76,853.40
  4. Step 4: Simplify right side
    121,306.20x = 13,969,250,565.66
  5. Step 5: Solve for x
    x = 13,969,250,565.66/121,306.20
  6. Step 6: Final answer
    x = 115,156.94

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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.