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Finding the Fourth Proportional to 155,843.57, 214,964.39 and 108,079.49

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Solution

The fourth proportional to 155,843.57, 214,964.39 and 108,079.49 is: 149,080.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,843.57 : 214,964.39 = 108,079.49 : x
  2. Step 2: Convert to fraction form
    155,843.57/214,964.39 = 108,079.49/x
  3. Step 3: Cross multiply
    155,843.57x = 214,964.39 × 108,079.49
  4. Step 4: Simplify right side
    155,843.57x = 23,233,240,834.74
  5. Step 5: Solve for x
    x = 23,233,240,834.74/155,843.57
  6. Step 6: Final answer
    x = 149,080.53

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1.5x scale

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.