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Finding the Fourth Proportional to 127,349.65, 175,743.35 and 79,630.93

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Solution

The fourth proportional to 127,349.65, 175,743.35 and 79,630.93 is: 109,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,349.65 : 175,743.35 = 79,630.93 : x
  2. Step 2: Convert to fraction form
    127,349.65/175,743.35 = 79,630.93/x
  3. Step 3: Cross multiply
    127,349.65x = 175,743.35 × 79,630.93
  4. Step 4: Simplify right side
    127,349.65x = 13,994,605,722.18
  5. Step 5: Solve for x
    x = 13,994,605,722.18/127,349.65
  6. Step 6: Final answer
    x = 109,891.20

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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.