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Finding the Fourth Proportional to 109,356.66, 150,912.72 and 61,610.76

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Solution

The fourth proportional to 109,356.66, 150,912.72 and 61,610.76 is: 85,023.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,356.66 : 150,912.72 = 61,610.76 : x
  2. Step 2: Convert to fraction form
    109,356.66/150,912.72 = 61,610.76/x
  3. Step 3: Cross multiply
    109,356.66x = 150,912.72 × 61,610.76
  4. Step 4: Simplify right side
    109,356.66x = 9,297,847,372.87
  5. Step 5: Solve for x
    x = 9,297,847,372.87/109,356.66
  6. Step 6: Final answer
    x = 85,023.15

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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.