Home / 139,102.20-191,961.26-75,440.05

Finding the Fourth Proportional to 139,102.20, 191,961.26 and 75,440.05

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Solution

The fourth proportional to 139,102.20, 191,961.26 and 75,440.05 is: 104,107.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,102.20 : 191,961.26 = 75,440.05 : x
  2. Step 2: Convert to fraction form
    139,102.20/191,961.26 = 75,440.05/x
  3. Step 3: Cross multiply
    139,102.20x = 191,961.26 × 75,440.05
  4. Step 4: Simplify right side
    139,102.20x = 14,481,566,478.26
  5. Step 5: Solve for x
    x = 14,481,566,478.26/139,102.20
  6. Step 6: Final answer
    x = 104,107.39

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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.