Home / 139,500.40-192,511.32-82,142.22

Finding the Fourth Proportional to 139,500.40, 192,511.32 and 82,142.22

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Solution

The fourth proportional to 139,500.40, 192,511.32 and 82,142.22 is: 113,356.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,500.40 : 192,511.32 = 82,142.22 : x
  2. Step 2: Convert to fraction form
    139,500.40/192,511.32 = 82,142.22/x
  3. Step 3: Cross multiply
    139,500.40x = 192,511.32 × 82,142.22
  4. Step 4: Simplify right side
    139,500.40x = 15,813,307,199.93
  5. Step 5: Solve for x
    x = 15,813,307,199.93/139,500.40
  6. Step 6: Final answer
    x = 113,356.72

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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.