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Finding the Fourth Proportional to 159,808.40, 239,552.76 and 80,683.28

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Solution

The fourth proportional to 159,808.40, 239,552.76 and 80,683.28 is: 120,944.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,808.40 : 239,552.76 = 80,683.28 : x
  2. Step 2: Convert to fraction form
    159,808.40/239,552.76 = 80,683.28/x
  3. Step 3: Cross multiply
    159,808.40x = 239,552.76 × 80,683.28
  4. Step 4: Simplify right side
    159,808.40x = 19,327,902,409.85
  5. Step 5: Solve for x
    x = 19,327,902,409.85/159,808.40
  6. Step 6: Final answer
    x = 120,944.22

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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.