Home / 141,934.38-212,660.55-85,656.23

Finding the Fourth Proportional to 141,934.38, 212,660.55 and 85,656.23

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Solution

The fourth proportional to 141,934.38, 212,660.55 and 85,656.23 is: 128,338.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,934.38 : 212,660.55 = 85,656.23 : x
  2. Step 2: Convert to fraction form
    141,934.38/212,660.55 = 85,656.23/x
  3. Step 3: Cross multiply
    141,934.38x = 212,660.55 × 85,656.23
  4. Step 4: Simplify right side
    141,934.38x = 18,215,699,919.42
  5. Step 5: Solve for x
    x = 18,215,699,919.42/141,934.38
  6. Step 6: Final answer
    x = 128,338.88

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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.