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Finding the Fourth Proportional to 169,940.42, 254,894.11 and 51,612.80

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Solution

The fourth proportional to 169,940.42, 254,894.11 and 51,612.80 is: 77,414.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,940.42 : 254,894.11 = 51,612.80 : x
  2. Step 2: Convert to fraction form
    169,940.42/254,894.11 = 51,612.80/x
  3. Step 3: Cross multiply
    169,940.42x = 254,894.11 × 51,612.80
  4. Step 4: Simplify right side
    169,940.42x = 13,155,798,720.61
  5. Step 5: Solve for x
    x = 13,155,798,720.61/169,940.42
  6. Step 6: Final answer
    x = 77,414.18

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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.