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Finding the Fourth Proportional to 159,939.06, 240,064.11 and 76,891.38

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Solution

The fourth proportional to 159,939.06, 240,064.11 and 76,891.38 is: 115,411.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,939.06 : 240,064.11 = 76,891.38 : x
  2. Step 2: Convert to fraction form
    159,939.06/240,064.11 = 76,891.38/x
  3. Step 3: Cross multiply
    159,939.06x = 240,064.11 × 76,891.38
  4. Step 4: Simplify right side
    159,939.06x = 18,458,860,706.37
  5. Step 5: Solve for x
    x = 18,458,860,706.37/159,939.06
  6. Step 6: Final answer
    x = 115,411.84

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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.