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Finding the Fourth Proportional to 127,264.74, 175,713.21 and 79,539.54

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Solution

The fourth proportional to 127,264.74, 175,713.21 and 79,539.54 is: 109,819.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,264.74 : 175,713.21 = 79,539.54 : x
  2. Step 2: Convert to fraction form
    127,264.74/175,713.21 = 79,539.54/x
  3. Step 3: Cross multiply
    127,264.74x = 175,713.21 × 79,539.54
  4. Step 4: Simplify right side
    127,264.74x = 13,976,147,895.32
  5. Step 5: Solve for x
    x = 13,976,147,895.32/127,264.74
  6. Step 6: Final answer
    x = 109,819.48

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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.