Home / 192,678.20-289,002.90-80,329.40

Finding the Fourth Proportional to 192,678.20, 289,002.90 and 80,329.40

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Solution

The fourth proportional to 192,678.20, 289,002.90 and 80,329.40 is: 120,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,678.20 : 289,002.90 = 80,329.40 : x
  2. Step 2: Convert to fraction form
    192,678.20/289,002.90 = 80,329.40/x
  3. Step 3: Cross multiply
    192,678.20x = 289,002.90 × 80,329.40
  4. Step 4: Simplify right side
    192,678.20x = 23,215,429,555.26
  5. Step 5: Solve for x
    x = 23,215,429,555.26/192,678.20
  6. Step 6: Final answer
    x = 120,488.10

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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.