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Finding the Fourth Proportional to 119,555, 164,985.92 and 66,563

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Solution

The fourth proportional to 119,555, 164,985.92 and 66,563 is: 91,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,555 : 164,985.92 = 66,563 : x
  2. Step 2: Convert to fraction form
    119,555/164,985.92 = 66,563/x
  3. Step 3: Cross multiply
    119,555x = 164,985.92 × 66,563
  4. Step 4: Simplify right side
    119,555x = 10,981,957,792.96
  5. Step 5: Solve for x
    x = 10,981,957,792.96/119,555
  6. Step 6: Final answer
    x = 91,856.95

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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.