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Finding the Fourth Proportional to 169,309.43, 254,002.41 and 85,109.93

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Solution

The fourth proportional to 169,309.43, 254,002.41 and 85,109.93 is: 127,684.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,309.43 : 254,002.41 = 85,109.93 : x
  2. Step 2: Convert to fraction form
    169,309.43/254,002.41 = 85,109.93/x
  3. Step 3: Cross multiply
    169,309.43x = 254,002.41 × 85,109.93
  4. Step 4: Simplify right side
    169,309.43x = 21,618,127,334.93
  5. Step 5: Solve for x
    x = 21,618,127,334.93/169,309.43
  6. Step 6: Final answer
    x = 127,684.13

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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.