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Finding the Fourth Proportional to 125,087.88, 172,621.54 and 67,727.80

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Solution

The fourth proportional to 125,087.88, 172,621.54 and 67,727.80 is: 93,464.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,087.88 : 172,621.54 = 67,727.80 : x
  2. Step 2: Convert to fraction form
    125,087.88/172,621.54 = 67,727.80/x
  3. Step 3: Cross multiply
    125,087.88x = 172,621.54 × 67,727.80
  4. Step 4: Simplify right side
    125,087.88x = 11,691,277,136.81
  5. Step 5: Solve for x
    x = 11,691,277,136.81/125,087.88
  6. Step 6: Final answer
    x = 93,464.51

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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.