Home / 154,521.78-213,229.91-86,523.17

Finding the Fourth Proportional to 154,521.78, 213,229.91 and 86,523.17

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Solution

The fourth proportional to 154,521.78, 213,229.91 and 86,523.17 is: 119,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,521.78 : 213,229.91 = 86,523.17 : x
  2. Step 2: Convert to fraction form
    154,521.78/213,229.91 = 86,523.17/x
  3. Step 3: Cross multiply
    154,521.78x = 213,229.91 × 86,523.17
  4. Step 4: Simplify right side
    154,521.78x = 18,449,327,752.01
  5. Step 5: Solve for x
    x = 18,449,327,752.01/154,521.78
  6. Step 6: Final answer
    x = 119,396.29

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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.