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Finding the Fourth Proportional to 136,812.40, 205,218.60 and 133,896.40

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Solution

The fourth proportional to 136,812.40, 205,218.60 and 133,896.40 is: 200,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,812.40 : 205,218.60 = 133,896.40 : x
  2. Step 2: Convert to fraction form
    136,812.40/205,218.60 = 133,896.40/x
  3. Step 3: Cross multiply
    136,812.40x = 205,218.60 × 133,896.40
  4. Step 4: Simplify right side
    136,812.40x = 27,478,031,753.04
  5. Step 5: Solve for x
    x = 27,478,031,753.04/136,812.40
  6. Step 6: Final answer
    x = 200,844.60

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1.5x scale

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.