Home / 144,192-198,982.80-80,530.72

Finding the Fourth Proportional to 144,192, 198,982.80 and 80,530.72

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Solution

The fourth proportional to 144,192, 198,982.80 and 80,530.72 is: 111,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,192 : 198,982.80 = 80,530.72 : x
  2. Step 2: Convert to fraction form
    144,192/198,982.80 = 80,530.72/x
  3. Step 3: Cross multiply
    144,192x = 198,982.80 × 80,530.72
  4. Step 4: Simplify right side
    144,192x = 16,024,228,151.62
  5. Step 5: Solve for x
    x = 16,024,228,151.62/144,192
  6. Step 6: Final answer
    x = 111,131.19

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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.