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Finding the Fourth Proportional to 139,266.80, 192,188.40 and 75,604.64

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Solution

The fourth proportional to 139,266.80, 192,188.40 and 75,604.64 is: 104,334.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,266.80 : 192,188.40 = 75,604.64 : x
  2. Step 2: Convert to fraction form
    139,266.80/192,188.40 = 75,604.64/x
  3. Step 3: Cross multiply
    139,266.80x = 192,188.40 × 75,604.64
  4. Step 4: Simplify right side
    139,266.80x = 14,530,334,794.18
  5. Step 5: Solve for x
    x = 14,530,334,794.18/139,266.80
  6. Step 6: Final answer
    x = 104,334.52

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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.