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Finding the Fourth Proportional to 100,489.92, 150,731.16 and 40,544.32

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Solution

The fourth proportional to 100,489.92, 150,731.16 and 40,544.32 is: 60,814.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,489.92 : 150,731.16 = 40,544.32 : x
  2. Step 2: Convert to fraction form
    100,489.92/150,731.16 = 40,544.32/x
  3. Step 3: Cross multiply
    100,489.92x = 150,731.16 × 40,544.32
  4. Step 4: Simplify right side
    100,489.92x = 6,111,292,385.01
  5. Step 5: Solve for x
    x = 6,111,292,385.01/100,489.92
  6. Step 6: Final answer
    x = 60,814.98

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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.