Home / 149,379.20-206,124.64-101,086.72

Finding the Fourth Proportional to 149,379.20, 206,124.64 and 101,086.72

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Solution

The fourth proportional to 149,379.20, 206,124.64 and 101,086.72 is: 139,487.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,379.20 : 206,124.64 = 101,086.72 : x
  2. Step 2: Convert to fraction form
    149,379.20/206,124.64 = 101,086.72/x
  3. Step 3: Cross multiply
    149,379.20x = 206,124.64 × 101,086.72
  4. Step 4: Simplify right side
    149,379.20x = 20,836,463,768.78
  5. Step 5: Solve for x
    x = 20,836,463,768.78/149,379.20
  6. Step 6: Final answer
    x = 139,487.05

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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.