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Finding the Fourth Proportional to 123,761.71, 185,444.82 and 79,351.64

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Solution

The fourth proportional to 123,761.71, 185,444.82 and 79,351.64 is: 118,900.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,761.71 : 185,444.82 = 79,351.64 : x
  2. Step 2: Convert to fraction form
    123,761.71/185,444.82 = 79,351.64/x
  3. Step 3: Cross multiply
    123,761.71x = 185,444.82 × 79,351.64
  4. Step 4: Simplify right side
    123,761.71x = 14,715,350,364.70
  5. Step 5: Solve for x
    x = 14,715,350,364.70/123,761.71
  6. Step 6: Final answer
    x = 118,900.67

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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.