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Finding the Fourth Proportional to 119,672.36, 165,149.78 and 65,956.60

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Solution

The fourth proportional to 119,672.36, 165,149.78 and 65,956.60 is: 91,021.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,672.36 : 165,149.78 = 65,956.60 : x
  2. Step 2: Convert to fraction form
    119,672.36/165,149.78 = 65,956.60/x
  3. Step 3: Cross multiply
    119,672.36x = 165,149.78 × 65,956.60
  4. Step 4: Simplify right side
    119,672.36x = 10,892,717,979.55
  5. Step 5: Solve for x
    x = 10,892,717,979.55/119,672.36
  6. Step 6: Final answer
    x = 91,021.17

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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.