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Finding the Fourth Proportional to 137,889.76, 206,783.56 and 49,119.68

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Solution

The fourth proportional to 137,889.76, 206,783.56 and 49,119.68 is: 73,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,889.76 : 206,783.56 = 49,119.68 : x
  2. Step 2: Convert to fraction form
    137,889.76/206,783.56 = 49,119.68/x
  3. Step 3: Cross multiply
    137,889.76x = 206,783.56 × 49,119.68
  4. Step 4: Simplify right side
    137,889.76x = 10,157,142,296.46
  5. Step 5: Solve for x
    x = 10,157,142,296.46/137,889.76
  6. Step 6: Final answer
    x = 73,661.32

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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.