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Finding the Fourth Proportional to 100,519.76, 150,779.72 and 30,399.14

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Solution

The fourth proportional to 100,519.76, 150,779.72 and 30,399.14 is: 45,598.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,519.76 : 150,779.72 = 30,399.14 : x
  2. Step 2: Convert to fraction form
    100,519.76/150,779.72 = 30,399.14/x
  3. Step 3: Cross multiply
    100,519.76x = 150,779.72 × 30,399.14
  4. Step 4: Simplify right side
    100,519.76x = 4,583,573,139.54
  5. Step 5: Solve for x
    x = 4,583,573,139.54/100,519.76
  6. Step 6: Final answer
    x = 45,598.73

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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.