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Finding the Fourth Proportional to 125,405.08, 173,064 and 68,818.48

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Solution

The fourth proportional to 125,405.08, 173,064 and 68,818.48 is: 94,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,405.08 : 173,064 = 68,818.48 : x
  2. Step 2: Convert to fraction form
    125,405.08/173,064 = 68,818.48/x
  3. Step 3: Cross multiply
    125,405.08x = 173,064 × 68,818.48
  4. Step 4: Simplify right side
    125,405.08x = 11,910,001,422.72
  5. Step 5: Solve for x
    x = 11,910,001,422.72/125,405.08
  6. Step 6: Final answer
    x = 94,972.24

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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.