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Finding the Fourth Proportional to 189,362.25, 261,328.25 and 108,815.04

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Solution

The fourth proportional to 189,362.25, 261,328.25 and 108,815.04 is: 150,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,362.25 : 261,328.25 = 108,815.04 : x
  2. Step 2: Convert to fraction form
    189,362.25/261,328.25 = 108,815.04/x
  3. Step 3: Cross multiply
    189,362.25x = 261,328.25 × 108,815.04
  4. Step 4: Simplify right side
    189,362.25x = 28,436,443,432.80
  5. Step 5: Solve for x
    x = 28,436,443,432.80/189,362.25
  6. Step 6: Final answer
    x = 150,169.55

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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.