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Finding the Fourth Proportional to 99,876.84, 137,885.40 and 68,092.44

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Solution

The fourth proportional to 99,876.84, 137,885.40 and 68,092.44 is: 94,005.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,876.84 : 137,885.40 = 68,092.44 : x
  2. Step 2: Convert to fraction form
    99,876.84/137,885.40 = 68,092.44/x
  3. Step 3: Cross multiply
    99,876.84x = 137,885.40 × 68,092.44
  4. Step 4: Simplify right side
    99,876.84x = 9,388,953,326.38
  5. Step 5: Solve for x
    x = 9,388,953,326.38/99,876.84
  6. Step 6: Final answer
    x = 94,005.31

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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.