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Finding the Fourth Proportional to 139,213.25, 192,114.42 and 75,551.05

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Solution

The fourth proportional to 139,213.25, 192,114.42 and 75,551.05 is: 104,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,213.25 : 192,114.42 = 75,551.05 : x
  2. Step 2: Convert to fraction form
    139,213.25/192,114.42 = 75,551.05/x
  3. Step 3: Cross multiply
    139,213.25x = 192,114.42 × 75,551.05
  4. Step 4: Simplify right side
    139,213.25x = 14,514,446,107.97
  5. Step 5: Solve for x
    x = 14,514,446,107.97/139,213.25
  6. Step 6: Final answer
    x = 104,260.52

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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.