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Finding the Fourth Proportional to 119,625.63, 165,107.20 and 68,672.78

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Solution

The fourth proportional to 119,625.63, 165,107.20 and 68,672.78 is: 94,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,625.63 : 165,107.20 = 68,672.78 : x
  2. Step 2: Convert to fraction form
    119,625.63/165,107.20 = 68,672.78/x
  3. Step 3: Cross multiply
    119,625.63x = 165,107.20 × 68,672.78
  4. Step 4: Simplify right side
    119,625.63x = 11,338,370,422.02
  5. Step 5: Solve for x
    x = 11,338,370,422.02/119,625.63
  6. Step 6: Final answer
    x = 94,782.12

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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.