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Finding the Fourth Proportional to 127,351.35, 175,690.35 and 79,521.66

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Solution

The fourth proportional to 127,351.35, 175,690.35 and 79,521.66 is: 109,705.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,351.35 : 175,690.35 = 79,521.66 : x
  2. Step 2: Convert to fraction form
    127,351.35/175,690.35 = 79,521.66/x
  3. Step 3: Cross multiply
    127,351.35x = 175,690.35 × 79,521.66
  4. Step 4: Simplify right side
    127,351.35x = 13,971,188,277.98
  5. Step 5: Solve for x
    x = 13,971,188,277.98/127,351.35
  6. Step 6: Final answer
    x = 109,705.85

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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.