Home / 125,039.29-172,190.68-108,679.31

Finding the Fourth Proportional to 125,039.29, 172,190.68 and 108,679.31

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Solution

The fourth proportional to 125,039.29, 172,190.68 and 108,679.31 is: 149,661.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,039.29 : 172,190.68 = 108,679.31 : x
  2. Step 2: Convert to fraction form
    125,039.29/172,190.68 = 108,679.31/x
  3. Step 3: Cross multiply
    125,039.29x = 172,190.68 × 108,679.31
  4. Step 4: Simplify right side
    125,039.29x = 18,713,564,290.83
  5. Step 5: Solve for x
    x = 18,713,564,290.83/125,039.29
  6. Step 6: Final answer
    x = 149,661.47

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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.