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Finding the Fourth Proportional to 159,563.80, 239,345.70 and 131,023.45

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Solution

The fourth proportional to 159,563.80, 239,345.70 and 131,023.45 is: 196,535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,563.80 : 239,345.70 = 131,023.45 : x
  2. Step 2: Convert to fraction form
    159,563.80/239,345.70 = 131,023.45/x
  3. Step 3: Cross multiply
    159,563.80x = 239,345.70 × 131,023.45
  4. Step 4: Simplify right side
    159,563.80x = 31,359,899,356.67
  5. Step 5: Solve for x
    x = 31,359,899,356.67/159,563.80
  6. Step 6: Final answer
    x = 196,535.18

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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.