Home / 153,845.20-212,233.57-100,110.61

Finding the Fourth Proportional to 153,845.20, 212,233.57 and 100,110.61

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Solution

The fourth proportional to 153,845.20, 212,233.57 and 100,110.61 is: 138,105.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,845.20 : 212,233.57 = 100,110.61 : x
  2. Step 2: Convert to fraction form
    153,845.20/212,233.57 = 100,110.61/x
  3. Step 3: Cross multiply
    153,845.20x = 212,233.57 × 100,110.61
  4. Step 4: Simplify right side
    153,845.20x = 21,246,832,155.18
  5. Step 5: Solve for x
    x = 21,246,832,155.18/153,845.20
  6. Step 6: Final answer
    x = 138,105.27

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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.