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Finding the Fourth Proportional to 137,987.28, 206,980.92 and 43,224.87

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Solution

The fourth proportional to 137,987.28, 206,980.92 and 43,224.87 is: 64,837.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,987.28 : 206,980.92 = 43,224.87 : x
  2. Step 2: Convert to fraction form
    137,987.28/206,980.92 = 43,224.87/x
  3. Step 3: Cross multiply
    137,987.28x = 206,980.92 × 43,224.87
  4. Step 4: Simplify right side
    137,987.28x = 8,946,723,359.48
  5. Step 5: Solve for x
    x = 8,946,723,359.48/137,987.28
  6. Step 6: Final answer
    x = 64,837.31

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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.