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Finding the Fourth Proportional to 159,693, 239,469.96 and 45,815.68

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Solution

The fourth proportional to 159,693, 239,469.96 and 45,815.68 is: 68,703.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,693 : 239,469.96 = 45,815.68 : x
  2. Step 2: Convert to fraction form
    159,693/239,469.96 = 45,815.68/x
  3. Step 3: Cross multiply
    159,693x = 239,469.96 × 45,815.68
  4. Step 4: Simplify right side
    159,693x = 10,971,479,056.97
  5. Step 5: Solve for x
    x = 10,971,479,056.97/159,693
  6. Step 6: Final answer
    x = 68,703.57

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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.