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Finding the Fourth Proportional to 99,758.75, 137,619.50 and 67,504.68

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Solution

The fourth proportional to 99,758.75, 137,619.50 and 67,504.68 is: 93,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,758.75 : 137,619.50 = 67,504.68 : x
  2. Step 2: Convert to fraction form
    99,758.75/137,619.50 = 67,504.68/x
  3. Step 3: Cross multiply
    99,758.75x = 137,619.50 × 67,504.68
  4. Step 4: Simplify right side
    99,758.75x = 9,289,959,971.74
  5. Step 5: Solve for x
    x = 9,289,959,971.74/99,758.75
  6. Step 6: Final answer
    x = 93,124.27

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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.