Home / 125,143.22-172,696.26-67,781.11

Finding the Fourth Proportional to 125,143.22, 172,696.26 and 67,781.11

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Solution

The fourth proportional to 125,143.22, 172,696.26 and 67,781.11 is: 93,537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,143.22 : 172,696.26 = 67,781.11 : x
  2. Step 2: Convert to fraction form
    125,143.22/172,696.26 = 67,781.11/x
  3. Step 3: Cross multiply
    125,143.22x = 172,696.26 × 67,781.11
  4. Step 4: Simplify right side
    125,143.22x = 11,705,544,365.10
  5. Step 5: Solve for x
    x = 11,705,544,365.10/125,143.22
  6. Step 6: Final answer
    x = 93,537.19

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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.