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Finding the Fourth Proportional to 154,553.40, 231,392.70 and 137,057.40

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Solution

The fourth proportional to 154,553.40, 231,392.70 and 137,057.40 is: 205,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,553.40 : 231,392.70 = 137,057.40 : x
  2. Step 2: Convert to fraction form
    154,553.40/231,392.70 = 137,057.40/x
  3. Step 3: Cross multiply
    154,553.40x = 231,392.70 × 137,057.40
  4. Step 4: Simplify right side
    154,553.40x = 31,714,081,840.98
  5. Step 5: Solve for x
    x = 31,714,081,840.98/154,553.40
  6. Step 6: Final answer
    x = 205,198.22

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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.