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Finding the Fourth Proportional to 243,155.88, 335,572.02 and 135,747

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Solution

The fourth proportional to 243,155.88, 335,572.02 and 135,747 is: 187,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,155.88 : 335,572.02 = 135,747 : x
  2. Step 2: Convert to fraction form
    243,155.88/335,572.02 = 135,747/x
  3. Step 3: Cross multiply
    243,155.88x = 335,572.02 × 135,747
  4. Step 4: Simplify right side
    243,155.88x = 45,552,894,998.94
  5. Step 5: Solve for x
    x = 45,552,894,998.94/243,155.88
  6. Step 6: Final answer
    x = 187,340.30

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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.