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Finding the Fourth Proportional to 121,351.60, 182,027.40 and 115,908.40

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Solution

The fourth proportional to 121,351.60, 182,027.40 and 115,908.40 is: 173,862.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,351.60 : 182,027.40 = 115,908.40 : x
  2. Step 2: Convert to fraction form
    121,351.60/182,027.40 = 115,908.40/x
  3. Step 3: Cross multiply
    121,351.60x = 182,027.40 × 115,908.40
  4. Step 4: Simplify right side
    121,351.60x = 21,098,504,690.16
  5. Step 5: Solve for x
    x = 21,098,504,690.16/121,351.60
  6. Step 6: Final answer
    x = 173,862.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.