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Finding the Fourth Proportional to 100,391.16, 150,615.90 and 47,844.84

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Solution

The fourth proportional to 100,391.16, 150,615.90 and 47,844.84 is: 71,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,391.16 : 150,615.90 = 47,844.84 : x
  2. Step 2: Convert to fraction form
    100,391.16/150,615.90 = 47,844.84/x
  3. Step 3: Cross multiply
    100,391.16x = 150,615.90 × 47,844.84
  4. Step 4: Simplify right side
    100,391.16x = 7,206,193,636.96
  5. Step 5: Solve for x
    x = 7,206,193,636.96/100,391.16
  6. Step 6: Final answer
    x = 71,781.16

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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.