Home / 125,200.52-172,786.08-77,481.60

Finding the Fourth Proportional to 125,200.52, 172,786.08 and 77,481.60

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Solution

The fourth proportional to 125,200.52, 172,786.08 and 77,481.60 is: 106,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,200.52 : 172,786.08 = 77,481.60 : x
  2. Step 2: Convert to fraction form
    125,200.52/172,786.08 = 77,481.60/x
  3. Step 3: Cross multiply
    125,200.52x = 172,786.08 × 77,481.60
  4. Step 4: Simplify right side
    125,200.52x = 13,387,741,936.13
  5. Step 5: Solve for x
    x = 13,387,741,936.13/125,200.52
  6. Step 6: Final answer
    x = 106,930.40

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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.