Home / 78,242.55-117,169.33-71,606.19

Finding the Fourth Proportional to 78,242.55, 117,169.33 and 71,606.19

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Solution

The fourth proportional to 78,242.55, 117,169.33 and 71,606.19 is: 107,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,242.55 : 117,169.33 = 71,606.19 : x
  2. Step 2: Convert to fraction form
    78,242.55/117,169.33 = 71,606.19/x
  3. Step 3: Cross multiply
    78,242.55x = 117,169.33 × 71,606.19
  4. Step 4: Simplify right side
    78,242.55x = 8,390,049,306.15
  5. Step 5: Solve for x
    x = 8,390,049,306.15/78,242.55
  6. Step 6: Final answer
    x = 107,231.29

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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.