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Finding the Fourth Proportional to 139,354.60, 192,311.58 and 75,692.44

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Solution

The fourth proportional to 139,354.60, 192,311.58 and 75,692.44 is: 104,456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,354.60 : 192,311.58 = 75,692.44 : x
  2. Step 2: Convert to fraction form
    139,354.60/192,311.58 = 75,692.44/x
  3. Step 3: Cross multiply
    139,354.60x = 192,311.58 × 75,692.44
  4. Step 4: Simplify right side
    139,354.60x = 14,556,532,730.46
  5. Step 5: Solve for x
    x = 14,556,532,730.46/139,354.60
  6. Step 6: Final answer
    x = 104,456.78

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1.5x scale

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.