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Finding the Fourth Proportional to 125,322.75, 172,953.60 and 68,734.13

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Solution

The fourth proportional to 125,322.75, 172,953.60 and 68,734.13 is: 94,857.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,322.75 : 172,953.60 = 68,734.13 : x
  2. Step 2: Convert to fraction form
    125,322.75/172,953.60 = 68,734.13/x
  3. Step 3: Cross multiply
    125,322.75x = 172,953.60 × 68,734.13
  4. Step 4: Simplify right side
    125,322.75x = 11,887,814,103.85
  5. Step 5: Solve for x
    x = 11,887,814,103.85/125,322.75
  6. Step 6: Final answer
    x = 94,857.59

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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.