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Finding the Fourth Proportional to 99,504.69, 137,272.05 and 67,228.89

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Solution

The fourth proportional to 99,504.69, 137,272.05 and 67,228.89 is: 92,745.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,504.69 : 137,272.05 = 67,228.89 : x
  2. Step 2: Convert to fraction form
    99,504.69/137,272.05 = 67,228.89/x
  3. Step 3: Cross multiply
    99,504.69x = 137,272.05 × 67,228.89
  4. Step 4: Simplify right side
    99,504.69x = 9,228,647,549.52
  5. Step 5: Solve for x
    x = 9,228,647,549.52/99,504.69
  6. Step 6: Final answer
    x = 92,745.85

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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.