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Finding the Fourth Proportional to 133,043.85, 199,622.48 and 69,912.45

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Solution

The fourth proportional to 133,043.85, 199,622.48 and 69,912.45 is: 104,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,043.85 : 199,622.48 = 69,912.45 : x
  2. Step 2: Convert to fraction form
    133,043.85/199,622.48 = 69,912.45/x
  3. Step 3: Cross multiply
    133,043.85x = 199,622.48 × 69,912.45
  4. Step 4: Simplify right side
    133,043.85x = 13,956,096,302.31
  5. Step 5: Solve for x
    x = 13,956,096,302.31/133,043.85
  6. Step 6: Final answer
    x = 104,898.47

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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.