Home / 137,621.22-206,366.76-53,421.72

Finding the Fourth Proportional to 137,621.22, 206,366.76 and 53,421.72

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Solution

The fourth proportional to 137,621.22, 206,366.76 and 53,421.72 is: 80,107.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,621.22 : 206,366.76 = 53,421.72 : x
  2. Step 2: Convert to fraction form
    137,621.22/206,366.76 = 53,421.72/x
  3. Step 3: Cross multiply
    137,621.22x = 206,366.76 × 53,421.72
  4. Step 4: Simplify right side
    137,621.22x = 11,024,467,270.03
  5. Step 5: Solve for x
    x = 11,024,467,270.03/137,621.22
  6. Step 6: Final answer
    x = 80,107.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.