Home / 154,278.90-212,924.60-86,299.66

Finding the Fourth Proportional to 154,278.90, 212,924.60 and 86,299.66

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Solution

The fourth proportional to 154,278.90, 212,924.60 and 86,299.66 is: 119,104.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,278.90 : 212,924.60 = 86,299.66 : x
  2. Step 2: Convert to fraction form
    154,278.90/212,924.60 = 86,299.66/x
  3. Step 3: Cross multiply
    154,278.90x = 212,924.60 × 86,299.66
  4. Step 4: Simplify right side
    154,278.90x = 18,375,320,585.64
  5. Step 5: Solve for x
    x = 18,375,320,585.64/154,278.90
  6. Step 6: Final answer
    x = 119,104.56

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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.