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Finding the Fourth Proportional to 243,437.05, 335,936.93 and 136,007.89

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Solution

The fourth proportional to 243,437.05, 335,936.93 and 136,007.89 is: 187,687.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,437.05 : 335,936.93 = 136,007.89 : x
  2. Step 2: Convert to fraction form
    243,437.05/335,936.93 = 136,007.89/x
  3. Step 3: Cross multiply
    243,437.05x = 335,936.93 × 136,007.89
  4. Step 4: Simplify right side
    243,437.05x = 45,690,071,502.50
  5. Step 5: Solve for x
    x = 45,690,071,502.50/243,437.05
  6. Step 6: Final answer
    x = 187,687.42

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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.