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Finding the Fourth Proportional to 106,928.80, 160,522.80 and 54,311.20

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Solution

The fourth proportional to 106,928.80, 160,522.80 and 54,311.20 is: 81,532.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,928.80 : 160,522.80 = 54,311.20 : x
  2. Step 2: Convert to fraction form
    106,928.80/160,522.80 = 54,311.20/x
  3. Step 3: Cross multiply
    106,928.80x = 160,522.80 × 54,311.20
  4. Step 4: Simplify right side
    106,928.80x = 8,718,185,895.36
  5. Step 5: Solve for x
    x = 8,718,185,895.36/106,928.80
  6. Step 6: Final answer
    x = 81,532.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.