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Finding the Fourth Proportional to 136,504.40, 204,785.40 and 43,019.60

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Solution

The fourth proportional to 136,504.40, 204,785.40 and 43,019.60 is: 64,538.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,504.40 : 204,785.40 = 43,019.60 : x
  2. Step 2: Convert to fraction form
    136,504.40/204,785.40 = 43,019.60/x
  3. Step 3: Cross multiply
    136,504.40x = 204,785.40 × 43,019.60
  4. Step 4: Simplify right side
    136,504.40x = 8,809,785,993.84
  5. Step 5: Solve for x
    x = 8,809,785,993.84/136,504.40
  6. Step 6: Final answer
    x = 64,538.48

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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.