Home / 139,257.72-192,147.66-85,551.48

Finding the Fourth Proportional to 139,257.72, 192,147.66 and 85,551.48

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Solution

The fourth proportional to 139,257.72, 192,147.66 and 85,551.48 is: 118,043.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,257.72 : 192,147.66 = 85,551.48 : x
  2. Step 2: Convert to fraction form
    139,257.72/192,147.66 = 85,551.48/x
  3. Step 3: Cross multiply
    139,257.72x = 192,147.66 × 85,551.48
  4. Step 4: Simplify right side
    139,257.72x = 16,438,516,691.54
  5. Step 5: Solve for x
    x = 16,438,516,691.54/139,257.72
  6. Step 6: Final answer
    x = 118,043.84

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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.