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Finding the Fourth Proportional to 169,604.94, 254,462.67 and 85,321.59

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Solution

The fourth proportional to 169,604.94, 254,462.67 and 85,321.59 is: 128,010.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,604.94 : 254,462.67 = 85,321.59 : x
  2. Step 2: Convert to fraction form
    169,604.94/254,462.67 = 85,321.59/x
  3. Step 3: Cross multiply
    169,604.94x = 254,462.67 × 85,321.59
  4. Step 4: Simplify right side
    169,604.94x = 21,711,159,600.05
  5. Step 5: Solve for x
    x = 21,711,159,600.05/169,604.94
  6. Step 6: Final answer
    x = 128,010.18

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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.