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Finding the Fourth Proportional to 159,719.20, 239,492.40 and 66,234.40

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Solution

The fourth proportional to 159,719.20, 239,492.40 and 66,234.40 is: 99,315.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,719.20 : 239,492.40 = 66,234.40 : x
  2. Step 2: Convert to fraction form
    159,719.20/239,492.40 = 66,234.40/x
  3. Step 3: Cross multiply
    159,719.20x = 239,492.40 × 66,234.40
  4. Step 4: Simplify right side
    159,719.20x = 15,862,635,418.56
  5. Step 5: Solve for x
    x = 15,862,635,418.56/159,719.20
  6. Step 6: Final answer
    x = 99,315.77

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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.