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Finding the Fourth Proportional to 169,458.30, 254,114.55 and 85,185.90

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Solution

The fourth proportional to 169,458.30, 254,114.55 and 85,185.90 is: 127,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,458.30 : 254,114.55 = 85,185.90 : x
  2. Step 2: Convert to fraction form
    169,458.30/254,114.55 = 85,185.90/x
  3. Step 3: Cross multiply
    169,458.30x = 254,114.55 × 85,185.90
  4. Step 4: Simplify right side
    169,458.30x = 21,646,976,644.85
  5. Step 5: Solve for x
    x = 21,646,976,644.85/169,458.30
  6. Step 6: Final answer
    x = 127,742.20

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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.