Home / 153,844.20-212,232.20-100,109.61

Finding the Fourth Proportional to 153,844.20, 212,232.20 and 100,109.61

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Solution

The fourth proportional to 153,844.20, 212,232.20 and 100,109.61 is: 138,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,844.20 : 212,232.20 = 100,109.61 : x
  2. Step 2: Convert to fraction form
    153,844.20/212,232.20 = 100,109.61/x
  3. Step 3: Cross multiply
    153,844.20x = 212,232.20 × 100,109.61
  4. Step 4: Simplify right side
    153,844.20x = 21,246,482,270.89
  5. Step 5: Solve for x
    x = 21,246,482,270.89/153,844.20
  6. Step 6: Final answer
    x = 138,103.89

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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.