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Finding the Fourth Proportional to 169,940.54, 254,523.04 and 81,256.77

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Solution

The fourth proportional to 169,940.54, 254,523.04 and 81,256.77 is: 121,699.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,940.54 : 254,523.04 = 81,256.77 : x
  2. Step 2: Convert to fraction form
    169,940.54/254,523.04 = 81,256.77/x
  3. Step 3: Cross multiply
    169,940.54x = 254,523.04 × 81,256.77
  4. Step 4: Simplify right side
    169,940.54x = 20,681,720,120.98
  5. Step 5: Solve for x
    x = 20,681,720,120.98/169,940.54
  6. Step 6: Final answer
    x = 121,699.74

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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.