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Finding the Fourth Proportional to 155,665.87, 233,516.12 and 66,928.34

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Solution

The fourth proportional to 155,665.87, 233,516.12 and 66,928.34 is: 100,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,665.87 : 233,516.12 = 66,928.34 : x
  2. Step 2: Convert to fraction form
    155,665.87/233,516.12 = 66,928.34/x
  3. Step 3: Cross multiply
    155,665.87x = 233,516.12 × 66,928.34
  4. Step 4: Simplify right side
    155,665.87x = 15,628,846,523.99
  5. Step 5: Solve for x
    x = 15,628,846,523.99/155,665.87
  6. Step 6: Final answer
    x = 100,399.96

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1.5x scale

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.