Home / 81,964.80-122,947.20-73,107.45

Finding the Fourth Proportional to 81,964.80, 122,947.20 and 73,107.45

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Solution

The fourth proportional to 81,964.80, 122,947.20 and 73,107.45 is: 109,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,964.80 : 122,947.20 = 73,107.45 : x
  2. Step 2: Convert to fraction form
    81,964.80/122,947.20 = 73,107.45/x
  3. Step 3: Cross multiply
    81,964.80x = 122,947.20 × 73,107.45
  4. Step 4: Simplify right side
    81,964.80x = 8,988,356,276.64
  5. Step 5: Solve for x
    x = 8,988,356,276.64/81,964.80
  6. Step 6: Final answer
    x = 109,661.18

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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.