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Finding the Fourth Proportional to 155,626.55, 214,766.67 and 91,135.97

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Solution

The fourth proportional to 155,626.55, 214,766.67 and 91,135.97 is: 125,768.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,626.55 : 214,766.67 = 91,135.97 : x
  2. Step 2: Convert to fraction form
    155,626.55/214,766.67 = 91,135.97/x
  3. Step 3: Cross multiply
    155,626.55x = 214,766.67 × 91,135.97
  4. Step 4: Simplify right side
    155,626.55x = 19,572,967,720.29
  5. Step 5: Solve for x
    x = 19,572,967,720.29/155,626.55
  6. Step 6: Final answer
    x = 125,768.83

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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.