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Finding the Fourth Proportional to 109,311.95, 150,920.13 and 89,216.75

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Solution

The fourth proportional to 109,311.95, 150,920.13 and 89,216.75 is: 123,175.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,311.95 : 150,920.13 = 89,216.75 : x
  2. Step 2: Convert to fraction form
    109,311.95/150,920.13 = 89,216.75/x
  3. Step 3: Cross multiply
    109,311.95x = 150,920.13 × 89,216.75
  4. Step 4: Simplify right side
    109,311.95x = 13,464,603,508.18
  5. Step 5: Solve for x
    x = 13,464,603,508.18/109,311.95
  6. Step 6: Final answer
    x = 123,175.95

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1.5x scale

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.