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Finding the Fourth Proportional to 137,665.51, 206,473.63 and 87,596.88

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Solution

The fourth proportional to 137,665.51, 206,473.63 and 87,596.88 is: 131,379.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,665.51 : 206,473.63 = 87,596.88 : x
  2. Step 2: Convert to fraction form
    137,665.51/206,473.63 = 87,596.88/x
  3. Step 3: Cross multiply
    137,665.51x = 206,473.63 × 87,596.88
  4. Step 4: Simplify right side
    137,665.51x = 18,086,445,790.27
  5. Step 5: Solve for x
    x = 18,086,445,790.27/137,665.51
  6. Step 6: Final answer
    x = 131,379.64

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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.