Home / 81,849.18-122,050.92-71,894.70

Finding the Fourth Proportional to 81,849.18, 122,050.92 and 71,894.70

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Solution

The fourth proportional to 81,849.18, 122,050.92 and 71,894.70 is: 107,207.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,849.18 : 122,050.92 = 71,894.70 : x
  2. Step 2: Convert to fraction form
    81,849.18/122,050.92 = 71,894.70/x
  3. Step 3: Cross multiply
    81,849.18x = 122,050.92 × 71,894.70
  4. Step 4: Simplify right side
    81,849.18x = 8,774,814,278.12
  5. Step 5: Solve for x
    x = 8,774,814,278.12/81,849.18
  6. Step 6: Final answer
    x = 107,207.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.