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Finding the Fourth Proportional to 102,835.71, 154,171.76 and 67,516.88

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Solution

The fourth proportional to 102,835.71, 154,171.76 and 67,516.88 is: 101,221.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,835.71 : 154,171.76 = 67,516.88 : x
  2. Step 2: Convert to fraction form
    102,835.71/154,171.76 = 67,516.88/x
  3. Step 3: Cross multiply
    102,835.71x = 154,171.76 × 67,516.88
  4. Step 4: Simplify right side
    102,835.71x = 10,409,195,110.87
  5. Step 5: Solve for x
    x = 10,409,195,110.87/102,835.71
  6. Step 6: Final answer
    x = 101,221.60

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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.