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Finding the Fourth Proportional to 139,266, 192,187.08 and 75,604.32

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Solution

The fourth proportional to 139,266, 192,187.08 and 75,604.32 is: 104,333.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,266 : 192,187.08 = 75,604.32 : x
  2. Step 2: Convert to fraction form
    139,266/192,187.08 = 75,604.32/x
  3. Step 3: Cross multiply
    139,266x = 192,187.08 × 75,604.32
  4. Step 4: Simplify right side
    139,266x = 14,530,173,496.19
  5. Step 5: Solve for x
    x = 14,530,173,496.19/139,266
  6. Step 6: Final answer
    x = 104,333.96

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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.