Home / 109,154.04-150,582.79-78,891.42

Finding the Fourth Proportional to 109,154.04, 150,582.79 and 78,891.42

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Solution

The fourth proportional to 109,154.04, 150,582.79 and 78,891.42 is: 108,834.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,154.04 : 150,582.79 = 78,891.42 : x
  2. Step 2: Convert to fraction form
    109,154.04/150,582.79 = 78,891.42/x
  3. Step 3: Cross multiply
    109,154.04x = 150,582.79 × 78,891.42
  4. Step 4: Simplify right side
    109,154.04x = 11,879,690,350.20
  5. Step 5: Solve for x
    x = 11,879,690,350.20/109,154.04
  6. Step 6: Final answer
    x = 108,834.18

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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.