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Finding the Fourth Proportional to 137,393.96, 206,120.59 and 42,622.29

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Solution

The fourth proportional to 137,393.96, 206,120.59 and 42,622.29 is: 63,942.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,393.96 : 206,120.59 = 42,622.29 : x
  2. Step 2: Convert to fraction form
    137,393.96/206,120.59 = 42,622.29/x
  3. Step 3: Cross multiply
    137,393.96x = 206,120.59 × 42,622.29
  4. Step 4: Simplify right side
    137,393.96x = 8,785,331,455.40
  5. Step 5: Solve for x
    x = 8,785,331,455.40/137,393.96
  6. Step 6: Final answer
    x = 63,942.63

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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.