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Finding the Fourth Proportional to 119,763.60, 165,266.12 and 66,049

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Solution

The fourth proportional to 119,763.60, 165,266.12 and 66,049 is: 91,143.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,763.60 : 165,266.12 = 66,049 : x
  2. Step 2: Convert to fraction form
    119,763.60/165,266.12 = 66,049/x
  3. Step 3: Cross multiply
    119,763.60x = 165,266.12 × 66,049
  4. Step 4: Simplify right side
    119,763.60x = 10,915,661,959.88
  5. Step 5: Solve for x
    x = 10,915,661,959.88/119,763.60
  6. Step 6: Final answer
    x = 91,143.40

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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.