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Finding the Fourth Proportional to 125,141.73, 172,699.89 and 68,553.11

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Solution

The fourth proportional to 125,141.73, 172,699.89 and 68,553.11 is: 94,605.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,141.73 : 172,699.89 = 68,553.11 : x
  2. Step 2: Convert to fraction form
    125,141.73/172,699.89 = 68,553.11/x
  3. Step 3: Cross multiply
    125,141.73x = 172,699.89 × 68,553.11
  4. Step 4: Simplify right side
    125,141.73x = 11,839,113,692.66
  5. Step 5: Solve for x
    x = 11,839,113,692.66/125,141.73
  6. Step 6: Final answer
    x = 94,605.64

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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.