Home / 125,044.10-172,449.09-91,131.63

Finding the Fourth Proportional to 125,044.10, 172,449.09 and 91,131.63

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Solution

The fourth proportional to 125,044.10, 172,449.09 and 91,131.63 is: 125,680.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,044.10 : 172,449.09 = 91,131.63 : x
  2. Step 2: Convert to fraction form
    125,044.10/172,449.09 = 91,131.63/x
  3. Step 3: Cross multiply
    125,044.10x = 172,449.09 × 91,131.63
  4. Step 4: Simplify right side
    125,044.10x = 15,715,566,891.55
  5. Step 5: Solve for x
    x = 15,715,566,891.55/125,044.10
  6. Step 6: Final answer
    x = 125,680.19

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1.5x scale

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.