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Finding the Fourth Proportional to 119,697.54, 165,175.20 and 65,979.78

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Solution

The fourth proportional to 119,697.54, 165,175.20 and 65,979.78 is: 91,048.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,697.54 : 165,175.20 = 65,979.78 : x
  2. Step 2: Convert to fraction form
    119,697.54/165,175.20 = 65,979.78/x
  3. Step 3: Cross multiply
    119,697.54x = 165,175.20 × 65,979.78
  4. Step 4: Simplify right side
    119,697.54x = 10,898,223,357.46
  5. Step 5: Solve for x
    x = 10,898,223,357.46/119,697.54
  6. Step 6: Final answer
    x = 91,048.01

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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.