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Finding the Fourth Proportional to 111,489.28, 153,850.29 and 63,745.75

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Solution

The fourth proportional to 111,489.28, 153,850.29 and 63,745.75 is: 87,966.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,489.28 : 153,850.29 = 63,745.75 : x
  2. Step 2: Convert to fraction form
    111,489.28/153,850.29 = 63,745.75/x
  3. Step 3: Cross multiply
    111,489.28x = 153,850.29 × 63,745.75
  4. Step 4: Simplify right side
    111,489.28x = 9,807,302,077.03
  5. Step 5: Solve for x
    x = 9,807,302,077.03/111,489.28
  6. Step 6: Final answer
    x = 87,966.33

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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.