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Finding the Fourth Proportional to 125,384.88, 173,006.46 and 74,388.09

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Solution

The fourth proportional to 125,384.88, 173,006.46 and 74,388.09 is: 102,640.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,384.88 : 173,006.46 = 74,388.09 : x
  2. Step 2: Convert to fraction form
    125,384.88/173,006.46 = 74,388.09/x
  3. Step 3: Cross multiply
    125,384.88x = 173,006.46 × 74,388.09
  4. Step 4: Simplify right side
    125,384.88x = 12,869,620,117.06
  5. Step 5: Solve for x
    x = 12,869,620,117.06/125,384.88
  6. Step 6: Final answer
    x = 102,640.93

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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.