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Finding the Fourth Proportional to 133,318.20, 199,904.40 and 54,343.20

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Solution

The fourth proportional to 133,318.20, 199,904.40 and 54,343.20 is: 81,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,318.20 : 199,904.40 = 54,343.20 : x
  2. Step 2: Convert to fraction form
    133,318.20/199,904.40 = 54,343.20/x
  3. Step 3: Cross multiply
    133,318.20x = 199,904.40 × 54,343.20
  4. Step 4: Simplify right side
    133,318.20x = 10,863,444,790.08
  5. Step 5: Solve for x
    x = 10,863,444,790.08/133,318.20
  6. Step 6: Final answer
    x = 81,485.08

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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.