Home / 154,351.35-212,937.28-90,660.44

Finding the Fourth Proportional to 154,351.35, 212,937.28 and 90,660.44

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Solution

The fourth proportional to 154,351.35, 212,937.28 and 90,660.44 is: 125,071.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,351.35 : 212,937.28 = 90,660.44 : x
  2. Step 2: Convert to fraction form
    154,351.35/212,937.28 = 90,660.44/x
  3. Step 3: Cross multiply
    154,351.35x = 212,937.28 × 90,660.44
  4. Step 4: Simplify right side
    154,351.35x = 19,304,987,497.20
  5. Step 5: Solve for x
    x = 19,304,987,497.20/154,351.35
  6. Step 6: Final answer
    x = 125,071.71

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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.