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Finding the Fourth Proportional to 188,691.63, 260,394.44 and 103,806.87

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Solution

The fourth proportional to 188,691.63, 260,394.44 and 103,806.87 is: 143,253.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,691.63 : 260,394.44 = 103,806.87 : x
  2. Step 2: Convert to fraction form
    188,691.63/260,394.44 = 103,806.87/x
  3. Step 3: Cross multiply
    188,691.63x = 260,394.44 × 103,806.87
  4. Step 4: Simplify right side
    188,691.63x = 27,030,731,781.80
  5. Step 5: Solve for x
    x = 27,030,731,781.80/188,691.63
  6. Step 6: Final answer
    x = 143,253.48

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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.