Home / 137,734.40-206,578.92-128,768.24

Finding the Fourth Proportional to 137,734.40, 206,578.92 and 128,768.24

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Solution

The fourth proportional to 137,734.40, 206,578.92 and 128,768.24 is: 193,131.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,734.40 : 206,578.92 = 128,768.24 : x
  2. Step 2: Convert to fraction form
    137,734.40/206,578.92 = 128,768.24/x
  3. Step 3: Cross multiply
    137,734.40x = 206,578.92 × 128,768.24
  4. Step 4: Simplify right side
    137,734.40x = 26,600,803,949.50
  5. Step 5: Solve for x
    x = 26,600,803,949.50/137,734.40
  6. Step 6: Final answer
    x = 193,131.16

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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.