Home / 121,731.70-167,986.52-68,017.16

Finding the Fourth Proportional to 121,731.70, 167,986.52 and 68,017.16

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Solution

The fourth proportional to 121,731.70, 167,986.52 and 68,017.16 is: 93,861.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,731.70 : 167,986.52 = 68,017.16 : x
  2. Step 2: Convert to fraction form
    121,731.70/167,986.52 = 68,017.16/x
  3. Step 3: Cross multiply
    121,731.70x = 167,986.52 × 68,017.16
  4. Step 4: Simplify right side
    121,731.70x = 11,425,966,008.68
  5. Step 5: Solve for x
    x = 11,425,966,008.68/121,731.70
  6. Step 6: Final answer
    x = 93,861.88

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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.