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Finding the Fourth Proportional to 158,874.75, 219,266.60 and 91,806.75

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Solution

The fourth proportional to 158,874.75, 219,266.60 and 91,806.75 is: 126,704.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,874.75 : 219,266.60 = 91,806.75 : x
  2. Step 2: Convert to fraction form
    158,874.75/219,266.60 = 91,806.75/x
  3. Step 3: Cross multiply
    158,874.75x = 219,266.60 × 91,806.75
  4. Step 4: Simplify right side
    158,874.75x = 20,130,153,470.52
  5. Step 5: Solve for x
    x = 20,130,153,470.52/158,874.75
  6. Step 6: Final answer
    x = 126,704.55

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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.