Home / 154,864.62-213,687.27-91,215.09

Finding the Fourth Proportional to 154,864.62, 213,687.27 and 91,215.09

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Solution

The fourth proportional to 154,864.62, 213,687.27 and 91,215.09 is: 125,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,864.62 : 213,687.27 = 91,215.09 : x
  2. Step 2: Convert to fraction form
    154,864.62/213,687.27 = 91,215.09/x
  3. Step 3: Cross multiply
    154,864.62x = 213,687.27 × 91,215.09
  4. Step 4: Simplify right side
    154,864.62x = 19,491,503,564.90
  5. Step 5: Solve for x
    x = 19,491,503,564.90/154,864.62
  6. Step 6: Final answer
    x = 125,861.57

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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.