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Finding the Fourth Proportional to 127,908.97, 191,781.42 and 53,080.77

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Solution

The fourth proportional to 127,908.97, 191,781.42 and 53,080.77 is: 79,587.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,908.97 : 191,781.42 = 53,080.77 : x
  2. Step 2: Convert to fraction form
    127,908.97/191,781.42 = 53,080.77/x
  3. Step 3: Cross multiply
    127,908.97x = 191,781.42 × 53,080.77
  4. Step 4: Simplify right side
    127,908.97x = 10,179,904,486.39
  5. Step 5: Solve for x
    x = 10,179,904,486.39/127,908.97
  6. Step 6: Final answer
    x = 79,587.10

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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.