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Finding the Fourth Proportional to 137,889.99, 206,783.96 and 49,119.93

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Solution

The fourth proportional to 137,889.99, 206,783.96 and 49,119.93 is: 73,661.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,889.99 : 206,783.96 = 49,119.93 : x
  2. Step 2: Convert to fraction form
    137,889.99/206,783.96 = 49,119.93/x
  3. Step 3: Cross multiply
    137,889.99x = 206,783.96 × 49,119.93
  4. Step 4: Simplify right side
    137,889.99x = 10,157,213,394.72
  5. Step 5: Solve for x
    x = 10,157,213,394.72/137,889.99
  6. Step 6: Final answer
    x = 73,661.72

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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.