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Finding the Fourth Proportional to 172,348, 258,764.21 and 88,168.55

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Solution

The fourth proportional to 172,348, 258,764.21 and 88,168.55 is: 132,376.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,348 : 258,764.21 = 88,168.55 : x
  2. Step 2: Convert to fraction form
    172,348/258,764.21 = 88,168.55/x
  3. Step 3: Cross multiply
    172,348x = 258,764.21 × 88,168.55
  4. Step 4: Simplify right side
    172,348x = 22,814,865,187.60
  5. Step 5: Solve for x
    x = 22,814,865,187.60/172,348
  6. Step 6: Final answer
    x = 132,376.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.