Home / 139,351.50-192,305.16-75,690.36

Finding the Fourth Proportional to 139,351.50, 192,305.16 and 75,690.36

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Solution

The fourth proportional to 139,351.50, 192,305.16 and 75,690.36 is: 104,452.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,351.50 : 192,305.16 = 75,690.36 : x
  2. Step 2: Convert to fraction form
    139,351.50/192,305.16 = 75,690.36/x
  3. Step 3: Cross multiply
    139,351.50x = 192,305.16 × 75,690.36
  4. Step 4: Simplify right side
    139,351.50x = 14,555,646,790.26
  5. Step 5: Solve for x
    x = 14,555,646,790.26/139,351.50
  6. Step 6: Final answer
    x = 104,452.75

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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.