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Finding the Fourth Proportional to 119,651.61, 165,121.02 and 68,672.64

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Solution

The fourth proportional to 119,651.61, 165,121.02 and 68,672.64 is: 94,769.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,651.61 : 165,121.02 = 68,672.64 : x
  2. Step 2: Convert to fraction form
    119,651.61/165,121.02 = 68,672.64/x
  3. Step 3: Cross multiply
    119,651.61x = 165,121.02 × 68,672.64
  4. Step 4: Simplify right side
    119,651.61x = 11,339,296,362.89
  5. Step 5: Solve for x
    x = 11,339,296,362.89/119,651.61
  6. Step 6: Final answer
    x = 94,769.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.