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Finding the Fourth Proportional to 101,375.28, 139,813.02 and 75,941.46

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Solution

The fourth proportional to 101,375.28, 139,813.02 and 75,941.46 is: 104,735.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,375.28 : 139,813.02 = 75,941.46 : x
  2. Step 2: Convert to fraction form
    101,375.28/139,813.02 = 75,941.46/x
  3. Step 3: Cross multiply
    101,375.28x = 139,813.02 × 75,941.46
  4. Step 4: Simplify right side
    101,375.28x = 10,617,604,865.81
  5. Step 5: Solve for x
    x = 10,617,604,865.81/101,375.28
  6. Step 6: Final answer
    x = 104,735.64

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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.