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Finding the Fourth Proportional to 136,542.40, 204,842.40 and 43,057.60

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Solution

The fourth proportional to 136,542.40, 204,842.40 and 43,057.60 is: 64,595.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,542.40 : 204,842.40 = 43,057.60 : x
  2. Step 2: Convert to fraction form
    136,542.40/204,842.40 = 43,057.60/x
  3. Step 3: Cross multiply
    136,542.40x = 204,842.40 × 43,057.60
  4. Step 4: Simplify right side
    136,542.40x = 8,820,022,122.24
  5. Step 5: Solve for x
    x = 8,820,022,122.24/136,542.40
  6. Step 6: Final answer
    x = 64,595.48

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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.