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Finding the Fourth Proportional to 159,950.40, 239,783 and 81,024

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Solution

The fourth proportional to 159,950.40, 239,783 and 81,024 is: 121,463.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,950.40 : 239,783 = 81,024 : x
  2. Step 2: Convert to fraction form
    159,950.40/239,783 = 81,024/x
  3. Step 3: Cross multiply
    159,950.40x = 239,783 × 81,024
  4. Step 4: Simplify right side
    159,950.40x = 19,428,177,792
  5. Step 5: Solve for x
    x = 19,428,177,792/159,950.40
  6. Step 6: Final answer
    x = 121,463.76

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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.