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Finding the Fourth Proportional to 139,419.60, 192,399.24 and 75,758.16

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Solution

The fourth proportional to 139,419.60, 192,399.24 and 75,758.16 is: 104,546.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,419.60 : 192,399.24 = 75,758.16 : x
  2. Step 2: Convert to fraction form
    139,419.60/192,399.24 = 75,758.16/x
  3. Step 3: Cross multiply
    139,419.60x = 192,399.24 × 75,758.16
  4. Step 4: Simplify right side
    139,419.60x = 14,575,812,407.80
  5. Step 5: Solve for x
    x = 14,575,812,407.80/139,419.60
  6. Step 6: Final answer
    x = 104,546.37

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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.