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Finding the Fourth Proportional to 109,305.96, 150,798.42 and 66,790.68

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Solution

The fourth proportional to 109,305.96, 150,798.42 and 66,790.68 is: 92,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,305.96 : 150,798.42 = 66,790.68 : x
  2. Step 2: Convert to fraction form
    109,305.96/150,798.42 = 66,790.68/x
  3. Step 3: Cross multiply
    109,305.96x = 150,798.42 × 66,790.68
  4. Step 4: Simplify right side
    109,305.96x = 10,071,929,014.73
  5. Step 5: Solve for x
    x = 10,071,929,014.73/109,305.96
  6. Step 6: Final answer
    x = 92,144.37

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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.