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Finding the Fourth Proportional to 159,492.98, 220,092.16 and 87,871.56

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Solution

The fourth proportional to 159,492.98, 220,092.16 and 87,871.56 is: 121,258.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,492.98 : 220,092.16 = 87,871.56 : x
  2. Step 2: Convert to fraction form
    159,492.98/220,092.16 = 87,871.56/x
  3. Step 3: Cross multiply
    159,492.98x = 220,092.16 × 87,871.56
  4. Step 4: Simplify right side
    159,492.98x = 19,339,841,442.97
  5. Step 5: Solve for x
    x = 19,339,841,442.97/159,492.98
  6. Step 6: Final answer
    x = 121,258.26

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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.