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Finding the Fourth Proportional to 137,446.60, 206,141.10 and 67,376.20

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Solution

The fourth proportional to 137,446.60, 206,141.10 and 67,376.20 is: 101,050.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,446.60 : 206,141.10 = 67,376.20 : x
  2. Step 2: Convert to fraction form
    137,446.60/206,141.10 = 67,376.20/x
  3. Step 3: Cross multiply
    137,446.60x = 206,141.10 × 67,376.20
  4. Step 4: Simplify right side
    137,446.60x = 13,889,003,981.82
  5. Step 5: Solve for x
    x = 13,889,003,981.82/137,446.60
  6. Step 6: Final answer
    x = 101,050.18

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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.