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Finding the Fourth Proportional to 139,489.44, 192,496.68 and 75,827.36

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Solution

The fourth proportional to 139,489.44, 192,496.68 and 75,827.36 is: 104,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,489.44 : 192,496.68 = 75,827.36 : x
  2. Step 2: Convert to fraction form
    139,489.44/192,496.68 = 75,827.36/x
  3. Step 3: Cross multiply
    139,489.44x = 192,496.68 × 75,827.36
  4. Step 4: Simplify right side
    139,489.44x = 14,596,515,053.16
  5. Step 5: Solve for x
    x = 14,596,515,053.16/139,489.44
  6. Step 6: Final answer
    x = 104,642.44

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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.