Home / 115,443.90-159,348.87-67,716.54

Finding the Fourth Proportional to 115,443.90, 159,348.87 and 67,716.54

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Solution

The fourth proportional to 115,443.90, 159,348.87 and 67,716.54 is: 93,470.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,443.90 : 159,348.87 = 67,716.54 : x
  2. Step 2: Convert to fraction form
    115,443.90/159,348.87 = 67,716.54/x
  3. Step 3: Cross multiply
    115,443.90x = 159,348.87 × 67,716.54
  4. Step 4: Simplify right side
    115,443.90x = 10,790,554,129.31
  5. Step 5: Solve for x
    x = 10,790,554,129.31/115,443.90
  6. Step 6: Final answer
    x = 93,470.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.