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Finding the Fourth Proportional to 161,174.84, 222,328.62 and 100,640.39

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Solution

The fourth proportional to 161,174.84, 222,328.62 and 100,640.39 is: 138,825.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,174.84 : 222,328.62 = 100,640.39 : x
  2. Step 2: Convert to fraction form
    161,174.84/222,328.62 = 100,640.39/x
  3. Step 3: Cross multiply
    161,174.84x = 222,328.62 × 100,640.39
  4. Step 4: Simplify right side
    161,174.84x = 22,375,239,024.96
  5. Step 5: Solve for x
    x = 22,375,239,024.96/161,174.84
  6. Step 6: Final answer
    x = 138,825.88

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1.5x scale

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.