Home / 121,731.20-167,985.83-68,016.66

Finding the Fourth Proportional to 121,731.20, 167,985.83 and 68,016.66

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Solution

The fourth proportional to 121,731.20, 167,985.83 and 68,016.66 is: 93,861.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,731.20 : 167,985.83 = 68,016.66 : x
  2. Step 2: Convert to fraction form
    121,731.20/167,985.83 = 68,016.66/x
  3. Step 3: Cross multiply
    121,731.20x = 167,985.83 × 68,016.66
  4. Step 4: Simplify right side
    121,731.20x = 11,425,834,244.00
  5. Step 5: Solve for x
    x = 11,425,834,244.00/121,731.20
  6. Step 6: Final answer
    x = 93,861.18

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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.