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Finding the Fourth Proportional to 188,811.03, 260,640.86 and 135,002.55

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Solution

The fourth proportional to 188,811.03, 260,640.86 and 135,002.55 is: 186,361.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,811.03 : 260,640.86 = 135,002.55 : x
  2. Step 2: Convert to fraction form
    188,811.03/260,640.86 = 135,002.55/x
  3. Step 3: Cross multiply
    188,811.03x = 260,640.86 × 135,002.55
  4. Step 4: Simplify right side
    188,811.03x = 35,187,180,059.18
  5. Step 5: Solve for x
    x = 35,187,180,059.18/188,811.03
  6. Step 6: Final answer
    x = 186,361.89

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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.