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Finding the Fourth Proportional to 139,193.88, 192,086.67 and 75,530.31

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Solution

The fourth proportional to 139,193.88, 192,086.67 and 75,530.31 is: 104,231.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,193.88 : 192,086.67 = 75,530.31 : x
  2. Step 2: Convert to fraction form
    139,193.88/192,086.67 = 75,530.31/x
  3. Step 3: Cross multiply
    139,193.88x = 192,086.67 × 75,530.31
  4. Step 4: Simplify right side
    139,193.88x = 14,508,365,731.97
  5. Step 5: Solve for x
    x = 14,508,365,731.97/139,193.88
  6. Step 6: Final answer
    x = 104,231.35

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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.