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Finding the Fourth Proportional to 132,471.84, 182,811.84 and 72,042.96

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Solution

The fourth proportional to 132,471.84, 182,811.84 and 72,042.96 is: 99,419.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,471.84 : 182,811.84 = 72,042.96 : x
  2. Step 2: Convert to fraction form
    132,471.84/182,811.84 = 72,042.96/x
  3. Step 3: Cross multiply
    132,471.84x = 182,811.84 × 72,042.96
  4. Step 4: Simplify right side
    132,471.84x = 13,170,306,076.65
  5. Step 5: Solve for x
    x = 13,170,306,076.65/132,471.84
  6. Step 6: Final answer
    x = 99,419.67

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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.