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Finding the Fourth Proportional to 139,712.34, 192,801.96 and 76,050.39

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Solution

The fourth proportional to 139,712.34, 192,801.96 and 76,050.39 is: 104,948.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,712.34 : 192,801.96 = 76,050.39 : x
  2. Step 2: Convert to fraction form
    139,712.34/192,801.96 = 76,050.39/x
  3. Step 3: Cross multiply
    139,712.34x = 192,801.96 × 76,050.39
  4. Step 4: Simplify right side
    139,712.34x = 14,662,664,250.76
  5. Step 5: Solve for x
    x = 14,662,664,250.76/139,712.34
  6. Step 6: Final answer
    x = 104,948.96

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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.