Home / 139,388.19-192,355.20-75,725.43

Finding the Fourth Proportional to 139,388.19, 192,355.20 and 75,725.43

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Solution

The fourth proportional to 139,388.19, 192,355.20 and 75,725.43 is: 104,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,388.19 : 192,355.20 = 75,725.43 : x
  2. Step 2: Convert to fraction form
    139,388.19/192,355.20 = 75,725.43/x
  3. Step 3: Cross multiply
    139,388.19x = 192,355.20 × 75,725.43
  4. Step 4: Simplify right side
    139,388.19x = 14,566,180,232.74
  5. Step 5: Solve for x
    x = 14,566,180,232.74/139,388.19
  6. Step 6: Final answer
    x = 104,500.82

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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.