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Finding the Fourth Proportional to 80,801.80, 121,202.70 and 57,182.20

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Solution

The fourth proportional to 80,801.80, 121,202.70 and 57,182.20 is: 85,773.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,801.80 : 121,202.70 = 57,182.20 : x
  2. Step 2: Convert to fraction form
    80,801.80/121,202.70 = 57,182.20/x
  3. Step 3: Cross multiply
    80,801.80x = 121,202.70 × 57,182.20
  4. Step 4: Simplify right side
    80,801.80x = 6,930,637,031.94
  5. Step 5: Solve for x
    x = 6,930,637,031.94/80,801.80
  6. Step 6: Final answer
    x = 85,773.30

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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.