Home / 80,235.20-120,308.45-54,963.65

Finding the Fourth Proportional to 80,235.20, 120,308.45 and 54,963.65

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Solution

The fourth proportional to 80,235.20, 120,308.45 and 54,963.65 is: 82,415.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,235.20 : 120,308.45 = 54,963.65 : x
  2. Step 2: Convert to fraction form
    80,235.20/120,308.45 = 54,963.65/x
  3. Step 3: Cross multiply
    80,235.20x = 120,308.45 × 54,963.65
  4. Step 4: Simplify right side
    80,235.20x = 6,612,590,661.48
  5. Step 5: Solve for x
    x = 6,612,590,661.48/80,235.20
  6. Step 6: Final answer
    x = 82,415.09

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1.5x scale

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.