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Finding the Fourth Proportional to 119,660.31, 165,139.00 and 68,689.54

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Solution

The fourth proportional to 119,660.31, 165,139.00 and 68,689.54 is: 94,796.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,660.31 : 165,139.00 = 68,689.54 : x
  2. Step 2: Convert to fraction form
    119,660.31/165,139.00 = 68,689.54/x
  3. Step 3: Cross multiply
    119,660.31x = 165,139.00 × 68,689.54
  4. Step 4: Simplify right side
    119,660.31x = 11,343,322,367.14
  5. Step 5: Solve for x
    x = 11,343,322,367.14/119,660.31
  6. Step 6: Final answer
    x = 94,796.03

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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.