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Finding the Fourth Proportional to 127,122.88, 175,356.66 and 79,293.16

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Solution

The fourth proportional to 127,122.88, 175,356.66 and 79,293.16 is: 109,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,122.88 : 175,356.66 = 79,293.16 : x
  2. Step 2: Convert to fraction form
    127,122.88/175,356.66 = 79,293.16/x
  3. Step 3: Cross multiply
    127,122.88x = 175,356.66 × 79,293.16
  4. Step 4: Simplify right side
    127,122.88x = 13,904,583,698.45
  5. Step 5: Solve for x
    x = 13,904,583,698.45/127,122.88
  6. Step 6: Final answer
    x = 109,379.08

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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.