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Finding the Fourth Proportional to 109,281.27, 150,815.12 and 66,264.87

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Solution

The fourth proportional to 109,281.27, 150,815.12 and 66,264.87 is: 91,449.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,281.27 : 150,815.12 = 66,264.87 : x
  2. Step 2: Convert to fraction form
    109,281.27/150,815.12 = 66,264.87/x
  3. Step 3: Cross multiply
    109,281.27x = 150,815.12 × 66,264.87
  4. Step 4: Simplify right side
    109,281.27x = 9,993,744,320.83
  5. Step 5: Solve for x
    x = 9,993,744,320.83/109,281.27
  6. Step 6: Final answer
    x = 91,449.75

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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.