Home / 137,719.76-206,576.88-90,632.28

Finding the Fourth Proportional to 137,719.76, 206,576.88 and 90,632.28

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Solution

The fourth proportional to 137,719.76, 206,576.88 and 90,632.28 is: 135,946.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,719.76 : 206,576.88 = 90,632.28 : x
  2. Step 2: Convert to fraction form
    137,719.76/206,576.88 = 90,632.28/x
  3. Step 3: Cross multiply
    137,719.76x = 206,576.88 × 90,632.28
  4. Step 4: Simplify right side
    137,719.76x = 18,722,533,629.69
  5. Step 5: Solve for x
    x = 18,722,533,629.69/137,719.76
  6. Step 6: Final answer
    x = 135,946.60

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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.