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Finding the Fourth Proportional to 142,687.52, 196,906.16 and 79,025.12

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Solution

The fourth proportional to 142,687.52, 196,906.16 and 79,025.12 is: 109,053.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,687.52 : 196,906.16 = 79,025.12 : x
  2. Step 2: Convert to fraction form
    142,687.52/196,906.16 = 79,025.12/x
  3. Step 3: Cross multiply
    142,687.52x = 196,906.16 × 79,025.12
  4. Step 4: Simplify right side
    142,687.52x = 15,560,532,922.74
  5. Step 5: Solve for x
    x = 15,560,532,922.74/142,687.52
  6. Step 6: Final answer
    x = 109,053.22

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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.