Home / 192,421.62-288,476.88-80,186.40

Finding the Fourth Proportional to 192,421.62, 288,476.88 and 80,186.40

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Solution

The fourth proportional to 192,421.62, 288,476.88 and 80,186.40 is: 120,214.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,421.62 : 288,476.88 = 80,186.40 : x
  2. Step 2: Convert to fraction form
    192,421.62/288,476.88 = 80,186.40/x
  3. Step 3: Cross multiply
    192,421.62x = 288,476.88 × 80,186.40
  4. Step 4: Simplify right side
    192,421.62x = 23,131,922,490.43
  5. Step 5: Solve for x
    x = 23,131,922,490.43/192,421.62
  6. Step 6: Final answer
    x = 120,214.78

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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.