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Finding the Fourth Proportional to 137,992.42, 206,988.63 and 43,223.41

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Solution

The fourth proportional to 137,992.42, 206,988.63 and 43,223.41 is: 64,835.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,992.42 : 206,988.63 = 43,223.41 : x
  2. Step 2: Convert to fraction form
    137,992.42/206,988.63 = 43,223.41/x
  3. Step 3: Cross multiply
    137,992.42x = 206,988.63 × 43,223.41
  4. Step 4: Simplify right side
    137,992.42x = 8,946,754,419.83
  5. Step 5: Solve for x
    x = 8,946,754,419.83/137,992.42
  6. Step 6: Final answer
    x = 64,835.12

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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.