Home / 192,678.20-288,902.10-99,366.20

Finding the Fourth Proportional to 192,678.20, 288,902.10 and 99,366.20

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Solution

The fourth proportional to 192,678.20, 288,902.10 and 99,366.20 is: 148,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,678.20 : 288,902.10 = 99,366.20 : x
  2. Step 2: Convert to fraction form
    192,678.20/288,902.10 = 99,366.20/x
  3. Step 3: Cross multiply
    192,678.20x = 288,902.10 × 99,366.20
  4. Step 4: Simplify right side
    192,678.20x = 28,707,103,849.02
  5. Step 5: Solve for x
    x = 28,707,103,849.02/192,678.20
  6. Step 6: Final answer
    x = 148,989.89

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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.