Home / 150,311.08-207,212.34-121,967.56

Finding the Fourth Proportional to 150,311.08, 207,212.34 and 121,967.56

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Solution

The fourth proportional to 150,311.08, 207,212.34 and 121,967.56 is: 168,139.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,311.08 : 207,212.34 = 121,967.56 : x
  2. Step 2: Convert to fraction form
    150,311.08/207,212.34 = 121,967.56/x
  3. Step 3: Cross multiply
    150,311.08x = 207,212.34 × 121,967.56
  4. Step 4: Simplify right side
    150,311.08x = 25,273,183,511.69
  5. Step 5: Solve for x
    x = 25,273,183,511.69/150,311.08
  6. Step 6: Final answer
    x = 168,139.19

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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.