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Finding the Fourth Proportional to 100,666.80, 150,993.72 and 30,546.72

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Solution

The fourth proportional to 100,666.80, 150,993.72 and 30,546.72 is: 45,818.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,666.80 : 150,993.72 = 30,546.72 : x
  2. Step 2: Convert to fraction form
    100,666.80/150,993.72 = 30,546.72/x
  3. Step 3: Cross multiply
    100,666.80x = 150,993.72 × 30,546.72
  4. Step 4: Simplify right side
    100,666.80x = 4,612,362,886.60
  5. Step 5: Solve for x
    x = 4,612,362,886.60/100,666.80
  6. Step 6: Final answer
    x = 45,818.11

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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.