Home / 105,189.12-157,829.92-55,257.62

Finding the Fourth Proportional to 105,189.12, 157,829.92 and 55,257.62

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Solution

The fourth proportional to 105,189.12, 157,829.92 and 55,257.62 is: 82,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,189.12 : 157,829.92 = 55,257.62 : x
  2. Step 2: Convert to fraction form
    105,189.12/157,829.92 = 55,257.62/x
  3. Step 3: Cross multiply
    105,189.12x = 157,829.92 × 55,257.62
  4. Step 4: Simplify right side
    105,189.12x = 8,721,304,816.70
  5. Step 5: Solve for x
    x = 8,721,304,816.70/105,189.12
  6. Step 6: Final answer
    x = 82,910.71

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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.