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Finding the Fourth Proportional to 139,573.49, 192,612.92 and 75,911.45

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Solution

The fourth proportional to 139,573.49, 192,612.92 and 75,911.45 is: 104,758.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,573.49 : 192,612.92 = 75,911.45 : x
  2. Step 2: Convert to fraction form
    139,573.49/192,612.92 = 75,911.45/x
  3. Step 3: Cross multiply
    139,573.49x = 192,612.92 × 75,911.45
  4. Step 4: Simplify right side
    139,573.49x = 14,621,524,703.31
  5. Step 5: Solve for x
    x = 14,621,524,703.31/139,573.49
  6. Step 6: Final answer
    x = 104,758.61

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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.