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Finding the Fourth Proportional to 99,513.66, 137,284.47 and 67,237.89

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Solution

The fourth proportional to 99,513.66, 137,284.47 and 67,237.89 is: 92,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,513.66 : 137,284.47 = 67,237.89 : x
  2. Step 2: Convert to fraction form
    99,513.66/137,284.47 = 67,237.89/x
  3. Step 3: Cross multiply
    99,513.66x = 137,284.47 × 67,237.89
  4. Step 4: Simplify right side
    99,513.66x = 9,230,718,092.57
  5. Step 5: Solve for x
    x = 9,230,718,092.57/99,513.66
  6. Step 6: Final answer
    x = 92,758.30

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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.