Home / 154,159.20-212,775.24-100,350.50

Finding the Fourth Proportional to 154,159.20, 212,775.24 and 100,350.50

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Solution

The fourth proportional to 154,159.20, 212,775.24 and 100,350.50 is: 138,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,159.20 : 212,775.24 = 100,350.50 : x
  2. Step 2: Convert to fraction form
    154,159.20/212,775.24 = 100,350.50/x
  3. Step 3: Cross multiply
    154,159.20x = 212,775.24 × 100,350.50
  4. Step 4: Simplify right side
    154,159.20x = 21,352,101,721.62
  5. Step 5: Solve for x
    x = 21,352,101,721.62/154,159.20
  6. Step 6: Final answer
    x = 138,506.83

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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.