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Finding the Fourth Proportional to 133,908.40, 200,862.60 and 131,940.10

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Solution

The fourth proportional to 133,908.40, 200,862.60 and 131,940.10 is: 197,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,908.40 : 200,862.60 = 131,940.10 : x
  2. Step 2: Convert to fraction form
    133,908.40/200,862.60 = 131,940.10/x
  3. Step 3: Cross multiply
    133,908.40x = 200,862.60 × 131,940.10
  4. Step 4: Simplify right side
    133,908.40x = 26,501,831,530.26
  5. Step 5: Solve for x
    x = 26,501,831,530.26/133,908.40
  6. Step 6: Final answer
    x = 197,910.15

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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.