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Finding the Fourth Proportional to 188,722.95, 260,408.03 and 108,134.97

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Solution

The fourth proportional to 188,722.95, 260,408.03 and 108,134.97 is: 149,209.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,722.95 : 260,408.03 = 108,134.97 : x
  2. Step 2: Convert to fraction form
    188,722.95/260,408.03 = 108,134.97/x
  3. Step 3: Cross multiply
    188,722.95x = 260,408.03 × 108,134.97
  4. Step 4: Simplify right side
    188,722.95x = 28,159,213,971.13
  5. Step 5: Solve for x
    x = 28,159,213,971.13/188,722.95
  6. Step 6: Final answer
    x = 149,209.27

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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.