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Finding the Fourth Proportional to 125,912.28, 173,706.89 and 74,914.82

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Solution

The fourth proportional to 125,912.28, 173,706.89 and 74,914.82 is: 103,351.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,912.28 : 173,706.89 = 74,914.82 : x
  2. Step 2: Convert to fraction form
    125,912.28/173,706.89 = 74,914.82/x
  3. Step 3: Cross multiply
    125,912.28x = 173,706.89 × 74,914.82
  4. Step 4: Simplify right side
    125,912.28x = 13,013,219,154.00
  5. Step 5: Solve for x
    x = 13,013,219,154.00/125,912.28
  6. Step 6: Final answer
    x = 103,351.47

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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.