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Finding the Fourth Proportional to 121,575.44, 167,772.84 and 71,264.72

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Solution

The fourth proportional to 121,575.44, 167,772.84 and 71,264.72 is: 98,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,575.44 : 167,772.84 = 71,264.72 : x
  2. Step 2: Convert to fraction form
    121,575.44/167,772.84 = 71,264.72/x
  3. Step 3: Cross multiply
    121,575.44x = 167,772.84 × 71,264.72
  4. Step 4: Simplify right side
    121,575.44x = 11,956,284,466.20
  5. Step 5: Solve for x
    x = 11,956,284,466.20/121,575.44
  6. Step 6: Final answer
    x = 98,344.57

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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.