Home / 148,854.12-205,421-80,872.44

Finding the Fourth Proportional to 148,854.12, 205,421 and 80,872.44

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Solution

The fourth proportional to 148,854.12, 205,421 and 80,872.44 is: 111,605.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,854.12 : 205,421 = 80,872.44 : x
  2. Step 2: Convert to fraction form
    148,854.12/205,421 = 80,872.44/x
  3. Step 3: Cross multiply
    148,854.12x = 205,421 × 80,872.44
  4. Step 4: Simplify right side
    148,854.12x = 16,612,897,497.24
  5. Step 5: Solve for x
    x = 16,612,897,497.24/148,854.12
  6. Step 6: Final answer
    x = 111,605.22

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1.5x scale

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.