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Finding the Fourth Proportional to 158,906.56, 219,237.54 and 89,986.60

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Solution

The fourth proportional to 158,906.56, 219,237.54 and 89,986.60 is: 124,151.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,906.56 : 219,237.54 = 89,986.60 : x
  2. Step 2: Convert to fraction form
    158,906.56/219,237.54 = 89,986.60/x
  3. Step 3: Cross multiply
    158,906.56x = 219,237.54 × 89,986.60
  4. Step 4: Simplify right side
    158,906.56x = 19,728,439,520.35
  5. Step 5: Solve for x
    x = 19,728,439,520.35/158,906.56
  6. Step 6: Final answer
    x = 124,151.20

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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.