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Finding the Fourth Proportional to 135,655, 187,204.17 and 76,039

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Solution

The fourth proportional to 135,655, 187,204.17 and 76,039 is: 104,933.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,655 : 187,204.17 = 76,039 : x
  2. Step 2: Convert to fraction form
    135,655/187,204.17 = 76,039/x
  3. Step 3: Cross multiply
    135,655x = 187,204.17 × 76,039
  4. Step 4: Simplify right side
    135,655x = 14,234,817,882.63
  5. Step 5: Solve for x
    x = 14,234,817,882.63/135,655
  6. Step 6: Final answer
    x = 104,933.97

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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.