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Finding the Fourth Proportional to 159,816.70, 239,725.05 and 100,719.10

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Solution

The fourth proportional to 159,816.70, 239,725.05 and 100,719.10 is: 151,078.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,816.70 : 239,725.05 = 100,719.10 : x
  2. Step 2: Convert to fraction form
    159,816.70/239,725.05 = 100,719.10/x
  3. Step 3: Cross multiply
    159,816.70x = 239,725.05 × 100,719.10
  4. Step 4: Simplify right side
    159,816.70x = 24,144,891,283.46
  5. Step 5: Solve for x
    x = 24,144,891,283.46/159,816.70
  6. Step 6: Final answer
    x = 151,078.65

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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.