Home / 80,170.14-120,246-21,010.48

Finding the Fourth Proportional to 80,170.14, 120,246 and 21,010.48

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Solution

The fourth proportional to 80,170.14, 120,246 and 21,010.48 is: 31,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,170.14 : 120,246 = 21,010.48 : x
  2. Step 2: Convert to fraction form
    80,170.14/120,246 = 21,010.48/x
  3. Step 3: Cross multiply
    80,170.14x = 120,246 × 21,010.48
  4. Step 4: Simplify right side
    80,170.14x = 2,526,426,178.08
  5. Step 5: Solve for x
    x = 2,526,426,178.08/80,170.14
  6. Step 6: Final answer
    x = 31,513.31

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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.