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Finding the Fourth Proportional to 127,357.86, 175,754.64 and 79,639.14

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Solution

The fourth proportional to 127,357.86, 175,754.64 and 79,639.14 is: 109,902.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,357.86 : 175,754.64 = 79,639.14 : x
  2. Step 2: Convert to fraction form
    127,357.86/175,754.64 = 79,639.14/x
  3. Step 3: Cross multiply
    127,357.86x = 175,754.64 × 79,639.14
  4. Step 4: Simplify right side
    127,357.86x = 13,996,948,380.61
  5. Step 5: Solve for x
    x = 13,996,948,380.61/127,357.86
  6. Step 6: Final answer
    x = 109,902.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.