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Finding the Fourth Proportional to 135,553.74, 187,063.92 and 74,299.89

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Solution

The fourth proportional to 135,553.74, 187,063.92 and 74,299.89 is: 102,533.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,553.74 : 187,063.92 = 74,299.89 : x
  2. Step 2: Convert to fraction form
    135,553.74/187,063.92 = 74,299.89/x
  3. Step 3: Cross multiply
    135,553.74x = 187,063.92 × 74,299.89
  4. Step 4: Simplify right side
    135,553.74x = 13,898,828,678.97
  5. Step 5: Solve for x
    x = 13,898,828,678.97/135,553.74
  6. Step 6: Final answer
    x = 102,533.72

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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.