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Finding the Fourth Proportional to 125,028.88, 172,540.32 and 68,445.52

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Solution

The fourth proportional to 125,028.88, 172,540.32 and 68,445.52 is: 94,455.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,028.88 : 172,540.32 = 68,445.52 : x
  2. Step 2: Convert to fraction form
    125,028.88/172,540.32 = 68,445.52/x
  3. Step 3: Cross multiply
    125,028.88x = 172,540.32 × 68,445.52
  4. Step 4: Simplify right side
    125,028.88x = 11,809,611,923.37
  5. Step 5: Solve for x
    x = 11,809,611,923.37/125,028.88
  6. Step 6: Final answer
    x = 94,455.07

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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.