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Finding the Fourth Proportional to 145,846.40, 218,769.60 and 136,004.90

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Solution

The fourth proportional to 145,846.40, 218,769.60 and 136,004.90 is: 204,007.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,846.40 : 218,769.60 = 136,004.90 : x
  2. Step 2: Convert to fraction form
    145,846.40/218,769.60 = 136,004.90/x
  3. Step 3: Cross multiply
    145,846.40x = 218,769.60 × 136,004.90
  4. Step 4: Simplify right side
    145,846.40x = 29,753,737,571.04
  5. Step 5: Solve for x
    x = 29,753,737,571.04/145,846.40
  6. Step 6: Final answer
    x = 204,007.35

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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.