Home / 149,639.27-206,334.74-122,330.12

Finding the Fourth Proportional to 149,639.27, 206,334.74 and 122,330.12

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Solution

The fourth proportional to 149,639.27, 206,334.74 and 122,330.12 is: 168,678.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,639.27 : 206,334.74 = 122,330.12 : x
  2. Step 2: Convert to fraction form
    149,639.27/206,334.74 = 122,330.12/x
  3. Step 3: Cross multiply
    149,639.27x = 206,334.74 × 122,330.12
  4. Step 4: Simplify right side
    149,639.27x = 25,240,952,778.52
  5. Step 5: Solve for x
    x = 25,240,952,778.52/149,639.27
  6. Step 6: Final answer
    x = 168,678.67

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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.