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Finding the Fourth Proportional to 159,939.02, 239,901.24 and 53,315.48

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Solution

The fourth proportional to 159,939.02, 239,901.24 and 53,315.48 is: 79,970.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,939.02 : 239,901.24 = 53,315.48 : x
  2. Step 2: Convert to fraction form
    159,939.02/239,901.24 = 53,315.48/x
  3. Step 3: Cross multiply
    159,939.02x = 239,901.24 × 53,315.48
  4. Step 4: Simplify right side
    159,939.02x = 12,790,449,763.20
  5. Step 5: Solve for x
    x = 12,790,449,763.20/159,939.02
  6. Step 6: Final answer
    x = 79,970.79

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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.