Home / 154,031.97-212,561.78-86,049.92

Finding the Fourth Proportional to 154,031.97, 212,561.78 and 86,049.92

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Solution

The fourth proportional to 154,031.97, 212,561.78 and 86,049.92 is: 118,747.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,031.97 : 212,561.78 = 86,049.92 : x
  2. Step 2: Convert to fraction form
    154,031.97/212,561.78 = 86,049.92/x
  3. Step 3: Cross multiply
    154,031.97x = 212,561.78 × 86,049.92
  4. Step 4: Simplify right side
    154,031.97x = 18,290,924,265.21
  5. Step 5: Solve for x
    x = 18,290,924,265.21/154,031.97
  6. Step 6: Final answer
    x = 118,747.58

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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.