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Finding the Fourth Proportional to 139,837.88, 209,640.70 and 55,546.04

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Solution

The fourth proportional to 139,837.88, 209,640.70 and 55,546.04 is: 83,272.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,837.88 : 209,640.70 = 55,546.04 : x
  2. Step 2: Convert to fraction form
    139,837.88/209,640.70 = 55,546.04/x
  3. Step 3: Cross multiply
    139,837.88x = 209,640.70 × 55,546.04
  4. Step 4: Simplify right side
    139,837.88x = 11,644,710,707.83
  5. Step 5: Solve for x
    x = 11,644,710,707.83/139,837.88
  6. Step 6: Final answer
    x = 83,272.94

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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.