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Finding the Fourth Proportional to 125,138.44, 172,689.33 and 68,550.22

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Solution

The fourth proportional to 125,138.44, 172,689.33 and 68,550.22 is: 94,598.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,138.44 : 172,689.33 = 68,550.22 : x
  2. Step 2: Convert to fraction form
    125,138.44/172,689.33 = 68,550.22/x
  3. Step 3: Cross multiply
    125,138.44x = 172,689.33 × 68,550.22
  4. Step 4: Simplify right side
    125,138.44x = 11,837,891,563.15
  5. Step 5: Solve for x
    x = 11,837,891,563.15/125,138.44
  6. Step 6: Final answer
    x = 94,598.36

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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.