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Finding the Fourth Proportional to 125,202.76, 172,748.90 and 74,227.44

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Solution

The fourth proportional to 125,202.76, 172,748.90 and 74,227.44 is: 102,415.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,202.76 : 172,748.90 = 74,227.44 : x
  2. Step 2: Convert to fraction form
    125,202.76/172,748.90 = 74,227.44/x
  3. Step 3: Cross multiply
    125,202.76x = 172,748.90 × 74,227.44
  4. Step 4: Simplify right side
    125,202.76x = 12,822,708,609.82
  5. Step 5: Solve for x
    x = 12,822,708,609.82/125,202.76
  6. Step 6: Final answer
    x = 102,415.54

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1.5x scale

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.