Home / 121,469.40-167,705.82-76,209.48

Finding the Fourth Proportional to 121,469.40, 167,705.82 and 76,209.48

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Solution

The fourth proportional to 121,469.40, 167,705.82 and 76,209.48 is: 105,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,469.40 : 167,705.82 = 76,209.48 : x
  2. Step 2: Convert to fraction form
    121,469.40/167,705.82 = 76,209.48/x
  3. Step 3: Cross multiply
    121,469.40x = 167,705.82 × 76,209.48
  4. Step 4: Simplify right side
    121,469.40x = 12,780,773,335.17
  5. Step 5: Solve for x
    x = 12,780,773,335.17/121,469.40
  6. Step 6: Final answer
    x = 105,218.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.