Home / 125,333.43-172,998.86-80,621.43

Finding the Fourth Proportional to 125,333.43, 172,998.86 and 80,621.43

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Solution

The fourth proportional to 125,333.43, 172,998.86 and 80,621.43 is: 111,282.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,333.43 : 172,998.86 = 80,621.43 : x
  2. Step 2: Convert to fraction form
    125,333.43/172,998.86 = 80,621.43/x
  3. Step 3: Cross multiply
    125,333.43x = 172,998.86 × 80,621.43
  4. Step 4: Simplify right side
    125,333.43x = 13,947,415,078.46
  5. Step 5: Solve for x
    x = 13,947,415,078.46/125,333.43
  6. Step 6: Final answer
    x = 111,282.48

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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.