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Finding the Fourth Proportional to 109,319.77, 150,862.13 and 61,568.65

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Solution

The fourth proportional to 109,319.77, 150,862.13 and 61,568.65 is: 84,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,319.77 : 150,862.13 = 61,568.65 : x
  2. Step 2: Convert to fraction form
    109,319.77/150,862.13 = 61,568.65/x
  3. Step 3: Cross multiply
    109,319.77x = 150,862.13 × 61,568.65
  4. Step 4: Simplify right side
    109,319.77x = 9,288,377,680.22
  5. Step 5: Solve for x
    x = 9,288,377,680.22/109,319.77
  6. Step 6: Final answer
    x = 84,965.21

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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.