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Finding the Fourth Proportional to 150,293.67, 207,405.53 and 81,383.88

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Solution

The fourth proportional to 150,293.67, 207,405.53 and 81,383.88 is: 112,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,293.67 : 207,405.53 = 81,383.88 : x
  2. Step 2: Convert to fraction form
    150,293.67/207,405.53 = 81,383.88/x
  3. Step 3: Cross multiply
    150,293.67x = 207,405.53 × 81,383.88
  4. Step 4: Simplify right side
    150,293.67x = 16,879,466,764.86
  5. Step 5: Solve for x
    x = 16,879,466,764.86/150,293.67
  6. Step 6: Final answer
    x = 112,309.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.