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Finding the Fourth Proportional to 137,383.72, 206,105.19 and 42,612.02

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Solution

The fourth proportional to 137,383.72, 206,105.19 and 42,612.02 is: 63,927.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,383.72 : 206,105.19 = 42,612.02 : x
  2. Step 2: Convert to fraction form
    137,383.72/206,105.19 = 42,612.02/x
  3. Step 3: Cross multiply
    137,383.72x = 206,105.19 × 42,612.02
  4. Step 4: Simplify right side
    137,383.72x = 8,782,558,478.38
  5. Step 5: Solve for x
    x = 8,782,558,478.38/137,383.72
  6. Step 6: Final answer
    x = 63,927.21

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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.