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Finding the Fourth Proportional to 139,452.48, 208,889.52 and 68,160.48

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Solution

The fourth proportional to 139,452.48, 208,889.52 and 68,160.48 is: 102,099.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,452.48 : 208,889.52 = 68,160.48 : x
  2. Step 2: Convert to fraction form
    139,452.48/208,889.52 = 68,160.48/x
  3. Step 3: Cross multiply
    139,452.48x = 208,889.52 × 68,160.48
  4. Step 4: Simplify right side
    139,452.48x = 14,238,009,950.17
  5. Step 5: Solve for x
    x = 14,238,009,950.17/139,452.48
  6. Step 6: Final answer
    x = 102,099.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.