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Finding the Fourth Proportional to 243,475.05, 335,989.13 and 136,045.97

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Solution

The fourth proportional to 243,475.05, 335,989.13 and 136,045.97 is: 187,739.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,475.05 : 335,989.13 = 136,045.97 : x
  2. Step 2: Convert to fraction form
    243,475.05/335,989.13 = 136,045.97/x
  3. Step 3: Cross multiply
    243,475.05x = 335,989.13 × 136,045.97
  4. Step 4: Simplify right side
    243,475.05x = 45,709,967,100.31
  5. Step 5: Solve for x
    x = 45,709,967,100.31/243,475.05
  6. Step 6: Final answer
    x = 187,739.84

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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.