Home / 153,845.70-212,234.26-100,111.11

Finding the Fourth Proportional to 153,845.70, 212,234.26 and 100,111.11

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Solution

The fourth proportional to 153,845.70, 212,234.26 and 100,111.11 is: 138,105.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,845.70 : 212,234.26 = 100,111.11 : x
  2. Step 2: Convert to fraction form
    153,845.70/212,234.26 = 100,111.11/x
  3. Step 3: Cross multiply
    153,845.70x = 212,234.26 × 100,111.11
  4. Step 4: Simplify right side
    153,845.70x = 21,247,007,348.63
  5. Step 5: Solve for x
    x = 21,247,007,348.63/153,845.70
  6. Step 6: Final answer
    x = 138,105.96

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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.