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Finding the Fourth Proportional to 125,504.32, 173,100 and 85,249.12

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Solution

The fourth proportional to 125,504.32, 173,100 and 85,249.12 is: 117,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,504.32 : 173,100 = 85,249.12 : x
  2. Step 2: Convert to fraction form
    125,504.32/173,100 = 85,249.12/x
  3. Step 3: Cross multiply
    125,504.32x = 173,100 × 85,249.12
  4. Step 4: Simplify right side
    125,504.32x = 14,756,622,672
  5. Step 5: Solve for x
    x = 14,756,622,672/125,504.32
  6. Step 6: Final answer
    x = 117,578.60

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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.