Home / 139,160.14-192,140.85-85,517.08

Finding the Fourth Proportional to 139,160.14, 192,140.85 and 85,517.08

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Solution

The fourth proportional to 139,160.14, 192,140.85 and 85,517.08 is: 118,074.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,160.14 : 192,140.85 = 85,517.08 : x
  2. Step 2: Convert to fraction form
    139,160.14/192,140.85 = 85,517.08/x
  3. Step 3: Cross multiply
    139,160.14x = 192,140.85 × 85,517.08
  4. Step 4: Simplify right side
    139,160.14x = 16,431,324,440.72
  5. Step 5: Solve for x
    x = 16,431,324,440.72/139,160.14
  6. Step 6: Final answer
    x = 118,074.93

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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.