Home / 215,154.20-296,791.62-129,090.90

Finding the Fourth Proportional to 215,154.20, 296,791.62 and 129,090.90

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Solution

The fourth proportional to 215,154.20, 296,791.62 and 129,090.90 is: 178,072.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,154.20 : 296,791.62 = 129,090.90 : x
  2. Step 2: Convert to fraction form
    215,154.20/296,791.62 = 129,090.90/x
  3. Step 3: Cross multiply
    215,154.20x = 296,791.62 × 129,090.90
  4. Step 4: Simplify right side
    215,154.20x = 38,313,097,338.26
  5. Step 5: Solve for x
    x = 38,313,097,338.26/215,154.20
  6. Step 6: Final answer
    x = 178,072.74

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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.