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Finding the Fourth Proportional to 243,546.78, 336,072.06 and 136,101.90

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Solution

The fourth proportional to 243,546.78, 336,072.06 and 136,101.90 is: 187,808.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,546.78 : 336,072.06 = 136,101.90 : x
  2. Step 2: Convert to fraction form
    243,546.78/336,072.06 = 136,101.90/x
  3. Step 3: Cross multiply
    243,546.78x = 336,072.06 × 136,101.90
  4. Step 4: Simplify right side
    243,546.78x = 45,740,045,902.91
  5. Step 5: Solve for x
    x = 45,740,045,902.91/243,546.78
  6. Step 6: Final answer
    x = 187,808.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.