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Finding the Fourth Proportional to 124,635.78, 186,953.94 and 54,520.56

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Solution

The fourth proportional to 124,635.78, 186,953.94 and 54,520.56 is: 81,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,635.78 : 186,953.94 = 54,520.56 : x
  2. Step 2: Convert to fraction form
    124,635.78/186,953.94 = 54,520.56/x
  3. Step 3: Cross multiply
    124,635.78x = 186,953.94 × 54,520.56
  4. Step 4: Simplify right side
    124,635.78x = 10,192,833,503.01
  5. Step 5: Solve for x
    x = 10,192,833,503.01/124,635.78
  6. Step 6: Final answer
    x = 81,780.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.