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Finding the Fourth Proportional to 137,991.42, 206,987.13 and 43,222.41

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Solution

The fourth proportional to 137,991.42, 206,987.13 and 43,222.41 is: 64,833.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,991.42 : 206,987.13 = 43,222.41 : x
  2. Step 2: Convert to fraction form
    137,991.42/206,987.13 = 43,222.41/x
  3. Step 3: Cross multiply
    137,991.42x = 206,987.13 × 43,222.41
  4. Step 4: Simplify right side
    137,991.42x = 8,946,482,779.93
  5. Step 5: Solve for x
    x = 8,946,482,779.93/137,991.42
  6. Step 6: Final answer
    x = 64,833.62

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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.