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Finding the Fourth Proportional to 161,387.70, 222,761.91 and 107,672.58

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Solution

The fourth proportional to 161,387.70, 222,761.91 and 107,672.58 is: 148,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,387.70 : 222,761.91 = 107,672.58 : x
  2. Step 2: Convert to fraction form
    161,387.70/222,761.91 = 107,672.58/x
  3. Step 3: Cross multiply
    161,387.70x = 222,761.91 × 107,672.58
  4. Step 4: Simplify right side
    161,387.70x = 23,985,349,575.43
  5. Step 5: Solve for x
    x = 23,985,349,575.43/161,387.70
  6. Step 6: Final answer
    x = 148,619.44

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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.