Home / 154,458.31-231,721.43-87,929.59

Finding the Fourth Proportional to 154,458.31, 231,721.43 and 87,929.59

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Solution

The fourth proportional to 154,458.31, 231,721.43 and 87,929.59 is: 131,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,458.31 : 231,721.43 = 87,929.59 : x
  2. Step 2: Convert to fraction form
    154,458.31/231,721.43 = 87,929.59/x
  3. Step 3: Cross multiply
    154,458.31x = 231,721.43 × 87,929.59
  4. Step 4: Simplify right side
    154,458.31x = 20,375,169,894.47
  5. Step 5: Solve for x
    x = 20,375,169,894.47/154,458.31
  6. Step 6: Final answer
    x = 131,913.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.