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Finding the Fourth Proportional to 159,935.31, 220,712.04 and 88,311.06

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Solution

The fourth proportional to 159,935.31, 220,712.04 and 88,311.06 is: 121,869.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,935.31 : 220,712.04 = 88,311.06 : x
  2. Step 2: Convert to fraction form
    159,935.31/220,712.04 = 88,311.06/x
  3. Step 3: Cross multiply
    159,935.31x = 220,712.04 × 88,311.06
  4. Step 4: Simplify right side
    159,935.31x = 19,491,314,207.16
  5. Step 5: Solve for x
    x = 19,491,314,207.16/159,935.31
  6. Step 6: Final answer
    x = 121,869.99

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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.