Home / 121,418.55-167,553.45-66,972.88

Finding the Fourth Proportional to 121,418.55, 167,553.45 and 66,972.88

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Solution

The fourth proportional to 121,418.55, 167,553.45 and 66,972.88 is: 92,420.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,418.55 : 167,553.45 = 66,972.88 : x
  2. Step 2: Convert to fraction form
    121,418.55/167,553.45 = 66,972.88/x
  3. Step 3: Cross multiply
    121,418.55x = 167,553.45 × 66,972.88
  4. Step 4: Simplify right side
    121,418.55x = 11,221,536,933.00
  5. Step 5: Solve for x
    x = 11,221,536,933.00/121,418.55
  6. Step 6: Final answer
    x = 92,420.29

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1.5x scale

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.