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Finding the Fourth Proportional to 125,310.25, 172,935.03 and 74,353.15

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Solution

The fourth proportional to 125,310.25, 172,935.03 and 74,353.15 is: 102,611.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,310.25 : 172,935.03 = 74,353.15 : x
  2. Step 2: Convert to fraction form
    125,310.25/172,935.03 = 74,353.15/x
  3. Step 3: Cross multiply
    125,310.25x = 172,935.03 × 74,353.15
  4. Step 4: Simplify right side
    125,310.25x = 12,858,264,225.84
  5. Step 5: Solve for x
    x = 12,858,264,225.84/125,310.25
  6. Step 6: Final answer
    x = 102,611.43

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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.