Home / 139,836.05-192,972.76-76,173.85

Finding the Fourth Proportional to 139,836.05, 192,972.76 and 76,173.85

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Solution

The fourth proportional to 139,836.05, 192,972.76 and 76,173.85 is: 105,119.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,836.05 : 192,972.76 = 76,173.85 : x
  2. Step 2: Convert to fraction form
    139,836.05/192,972.76 = 76,173.85/x
  3. Step 3: Cross multiply
    139,836.05x = 192,972.76 × 76,173.85
  4. Step 4: Simplify right side
    139,836.05x = 14,699,478,074.33
  5. Step 5: Solve for x
    x = 14,699,478,074.33/139,836.05
  6. Step 6: Final answer
    x = 105,119.37

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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.