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Finding the Fourth Proportional to 161,299.78, 222,587.88 and 88,702.06

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Solution

The fourth proportional to 161,299.78, 222,587.88 and 88,702.06 is: 122,405.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,299.78 : 222,587.88 = 88,702.06 : x
  2. Step 2: Convert to fraction form
    161,299.78/222,587.88 = 88,702.06/x
  3. Step 3: Cross multiply
    161,299.78x = 222,587.88 × 88,702.06
  4. Step 4: Simplify right side
    161,299.78x = 19,744,003,487.03
  5. Step 5: Solve for x
    x = 19,744,003,487.03/161,299.78
  6. Step 6: Final answer
    x = 122,405.64

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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.