Home / 154,306.56-212,934.46-86,310.38

Finding the Fourth Proportional to 154,306.56, 212,934.46 and 86,310.38

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Solution

The fourth proportional to 154,306.56, 212,934.46 and 86,310.38 is: 119,103.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,306.56 : 212,934.46 = 86,310.38 : x
  2. Step 2: Convert to fraction form
    154,306.56/212,934.46 = 86,310.38/x
  3. Step 3: Cross multiply
    154,306.56x = 212,934.46 × 86,310.38
  4. Step 4: Simplify right side
    154,306.56x = 18,378,454,157.69
  5. Step 5: Solve for x
    x = 18,378,454,157.69/154,306.56
  6. Step 6: Final answer
    x = 119,103.52

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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.