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Finding the Fourth Proportional to 111,762.95, 154,229.96 and 66,441.02

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Solution

The fourth proportional to 111,762.95, 154,229.96 and 66,441.02 is: 91,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,762.95 : 154,229.96 = 66,441.02 : x
  2. Step 2: Convert to fraction form
    111,762.95/154,229.96 = 66,441.02/x
  3. Step 3: Cross multiply
    111,762.95x = 154,229.96 × 66,441.02
  4. Step 4: Simplify right side
    111,762.95x = 10,247,195,524.75
  5. Step 5: Solve for x
    x = 10,247,195,524.75/111,762.95
  6. Step 6: Final answer
    x = 91,686.87

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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.