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Finding the Fourth Proportional to 92,696.98, 139,045.30 and 80,179.78

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Solution

The fourth proportional to 92,696.98, 139,045.30 and 80,179.78 is: 120,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,696.98 : 139,045.30 = 80,179.78 : x
  2. Step 2: Convert to fraction form
    92,696.98/139,045.30 = 80,179.78/x
  3. Step 3: Cross multiply
    92,696.98x = 139,045.30 × 80,179.78
  4. Step 4: Simplify right side
    92,696.98x = 11,148,621,564.03
  5. Step 5: Solve for x
    x = 11,148,621,564.03/92,696.98
  6. Step 6: Final answer
    x = 120,269.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.