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Finding the Fourth Proportional to 123,491.15, 170,417.96 and 66,902.52

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Solution

The fourth proportional to 123,491.15, 170,417.96 and 66,902.52 is: 92,325.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.15 : 170,417.96 = 66,902.52 : x
  2. Step 2: Convert to fraction form
    123,491.15/170,417.96 = 66,902.52/x
  3. Step 3: Cross multiply
    123,491.15x = 170,417.96 × 66,902.52
  4. Step 4: Simplify right side
    123,491.15x = 11,401,391,532.70
  5. Step 5: Solve for x
    x = 11,401,391,532.70/123,491.15
  6. Step 6: Final answer
    x = 92,325.58

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.