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Finding the Fourth Proportional to 119,691.86, 165,172.73 and 65,244.60

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Solution

The fourth proportional to 119,691.86, 165,172.73 and 65,244.60 is: 90,036.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,691.86 : 165,172.73 = 65,244.60 : x
  2. Step 2: Convert to fraction form
    119,691.86/165,172.73 = 65,244.60/x
  3. Step 3: Cross multiply
    119,691.86x = 165,172.73 × 65,244.60
  4. Step 4: Simplify right side
    119,691.86x = 10,776,628,373.54
  5. Step 5: Solve for x
    x = 10,776,628,373.54/119,691.86
  6. Step 6: Final answer
    x = 90,036.44

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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.