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Finding the Fourth Proportional to 119,519.37, 164,934.38 and 65,805.28

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Solution

The fourth proportional to 119,519.37, 164,934.38 and 65,805.28 is: 90,809.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,519.37 : 164,934.38 = 65,805.28 : x
  2. Step 2: Convert to fraction form
    119,519.37/164,934.38 = 65,805.28/x
  3. Step 3: Cross multiply
    119,519.37x = 164,934.38 × 65,805.28
  4. Step 4: Simplify right side
    119,519.37x = 10,853,552,809.70
  5. Step 5: Solve for x
    x = 10,853,552,809.70/119,519.37
  6. Step 6: Final answer
    x = 90,809.99

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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.