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Finding the Fourth Proportional to 104,295.55, 143,874.87 and 65,990.55

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Solution

The fourth proportional to 104,295.55, 143,874.87 and 65,990.55 is: 91,033.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,295.55 : 143,874.87 = 65,990.55 : x
  2. Step 2: Convert to fraction form
    104,295.55/143,874.87 = 65,990.55/x
  3. Step 3: Cross multiply
    104,295.55x = 143,874.87 × 65,990.55
  4. Step 4: Simplify right side
    104,295.55x = 9,494,381,248.08
  5. Step 5: Solve for x
    x = 9,494,381,248.08/104,295.55
  6. Step 6: Final answer
    x = 91,033.43

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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.