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Finding the Fourth Proportional to 157,843.70, 236,506.35 and 131,405.30

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Solution

The fourth proportional to 157,843.70, 236,506.35 and 131,405.30 is: 196,892.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,843.70 : 236,506.35 = 131,405.30 : x
  2. Step 2: Convert to fraction form
    157,843.70/236,506.35 = 131,405.30/x
  3. Step 3: Cross multiply
    157,843.70x = 236,506.35 × 131,405.30
  4. Step 4: Simplify right side
    157,843.70x = 31,078,187,873.66
  5. Step 5: Solve for x
    x = 31,078,187,873.66/157,843.70
  6. Step 6: Final answer
    x = 196,892.17

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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.