Home / 139,421.25-192,396.06-75,757.68

Finding the Fourth Proportional to 139,421.25, 192,396.06 and 75,757.68

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Solution

The fourth proportional to 139,421.25, 192,396.06 and 75,757.68 is: 104,542.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,421.25 : 192,396.06 = 75,757.68 : x
  2. Step 2: Convert to fraction form
    139,421.25/192,396.06 = 75,757.68/x
  3. Step 3: Cross multiply
    139,421.25x = 192,396.06 × 75,757.68
  4. Step 4: Simplify right side
    139,421.25x = 14,575,479,146.74
  5. Step 5: Solve for x
    x = 14,575,479,146.74/139,421.25
  6. Step 6: Final answer
    x = 104,542.74

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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.