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Finding the Fourth Proportional to 136,922.60, 205,383.90 and 135,079.40

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Solution

The fourth proportional to 136,922.60, 205,383.90 and 135,079.40 is: 202,619.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,922.60 : 205,383.90 = 135,079.40 : x
  2. Step 2: Convert to fraction form
    136,922.60/205,383.90 = 135,079.40/x
  3. Step 3: Cross multiply
    136,922.60x = 205,383.90 × 135,079.40
  4. Step 4: Simplify right side
    136,922.60x = 27,743,133,981.66
  5. Step 5: Solve for x
    x = 27,743,133,981.66/136,922.60
  6. Step 6: Final answer
    x = 202,619.10

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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.