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Finding the Fourth Proportional to 139,500.57, 192,502.60 and 75,837.81

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Solution

The fourth proportional to 139,500.57, 192,502.60 and 75,837.81 is: 104,651.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,500.57 : 192,502.60 = 75,837.81 : x
  2. Step 2: Convert to fraction form
    139,500.57/192,502.60 = 75,837.81/x
  3. Step 3: Cross multiply
    139,500.57x = 192,502.60 × 75,837.81
  4. Step 4: Simplify right side
    139,500.57x = 14,598,975,603.31
  5. Step 5: Solve for x
    x = 14,598,975,603.31/139,500.57
  6. Step 6: Final answer
    x = 104,651.73

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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.