Home / 127,121.88-175,355.28-79,292.16

Finding the Fourth Proportional to 127,121.88, 175,355.28 and 79,292.16

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Solution

The fourth proportional to 127,121.88, 175,355.28 and 79,292.16 is: 109,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,121.88 : 175,355.28 = 79,292.16 : x
  2. Step 2: Convert to fraction form
    127,121.88/175,355.28 = 79,292.16/x
  3. Step 3: Cross multiply
    127,121.88x = 175,355.28 × 79,292.16
  4. Step 4: Simplify right side
    127,121.88x = 13,904,298,918.60
  5. Step 5: Solve for x
    x = 13,904,298,918.60/127,121.88
  6. Step 6: Final answer
    x = 109,377.70

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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.