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Finding the Fourth Proportional to 139,427.28, 192,404.34 and 75,763.68

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Solution

The fourth proportional to 139,427.28, 192,404.34 and 75,763.68 is: 104,550.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,427.28 : 192,404.34 = 75,763.68 : x
  2. Step 2: Convert to fraction form
    139,427.28/192,404.34 = 75,763.68/x
  3. Step 3: Cross multiply
    139,427.28x = 192,404.34 × 75,763.68
  4. Step 4: Simplify right side
    139,427.28x = 14,577,260,846.37
  5. Step 5: Solve for x
    x = 14,577,260,846.37/139,427.28
  6. Step 6: Final answer
    x = 104,550.99

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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.