Home / 125,310.48-172,930.68-68,721.36

Finding the Fourth Proportional to 125,310.48, 172,930.68 and 68,721.36

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Solution

The fourth proportional to 125,310.48, 172,930.68 and 68,721.36 is: 94,836.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,310.48 : 172,930.68 = 68,721.36 : x
  2. Step 2: Convert to fraction form
    125,310.48/172,930.68 = 68,721.36/x
  3. Step 3: Cross multiply
    125,310.48x = 172,930.68 × 68,721.36
  4. Step 4: Simplify right side
    125,310.48x = 11,884,031,515.32
  5. Step 5: Solve for x
    x = 11,884,031,515.32/125,310.48
  6. Step 6: Final answer
    x = 94,836.69

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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.