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Finding the Fourth Proportional to 159,617.20, 239,080.20 and 131,969.20

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Solution

The fourth proportional to 159,617.20, 239,080.20 and 131,969.20 is: 197,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,617.20 : 239,080.20 = 131,969.20 : x
  2. Step 2: Convert to fraction form
    159,617.20/239,080.20 = 131,969.20/x
  3. Step 3: Cross multiply
    159,617.20x = 239,080.20 × 131,969.20
  4. Step 4: Simplify right side
    159,617.20x = 31,551,222,729.84
  5. Step 5: Solve for x
    x = 31,551,222,729.84/159,617.20
  6. Step 6: Final answer
    x = 197,668.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.