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Finding the Fourth Proportional to 103,922.92, 143,319.48 and 68,099.92

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Solution

The fourth proportional to 103,922.92, 143,319.48 and 68,099.92 is: 93,916.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,922.92 : 143,319.48 = 68,099.92 : x
  2. Step 2: Convert to fraction form
    103,922.92/143,319.48 = 68,099.92/x
  3. Step 3: Cross multiply
    103,922.92x = 143,319.48 × 68,099.92
  4. Step 4: Simplify right side
    103,922.92x = 9,760,045,122.44
  5. Step 5: Solve for x
    x = 9,760,045,122.44/103,922.92
  6. Step 6: Final answer
    x = 93,916.19

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1.5x scale

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.