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Finding the Fourth Proportional to 159,139.77, 238,691.80 and 40,813.89

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Solution

The fourth proportional to 159,139.77, 238,691.80 and 40,813.89 is: 61,216.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,139.77 : 238,691.80 = 40,813.89 : x
  2. Step 2: Convert to fraction form
    159,139.77/238,691.80 = 40,813.89/x
  3. Step 3: Cross multiply
    159,139.77x = 238,691.80 × 40,813.89
  4. Step 4: Simplify right side
    159,139.77x = 9,741,940,869.10
  5. Step 5: Solve for x
    x = 9,741,940,869.10/159,139.77
  6. Step 6: Final answer
    x = 61,216.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.