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Finding the Fourth Proportional to 99,503.93, 137,081.81 and 69,237.27

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Solution

The fourth proportional to 99,503.93, 137,081.81 and 69,237.27 is: 95,384.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,503.93 : 137,081.81 = 69,237.27 : x
  2. Step 2: Convert to fraction form
    99,503.93/137,081.81 = 69,237.27/x
  3. Step 3: Cross multiply
    99,503.93x = 137,081.81 × 69,237.27
  4. Step 4: Simplify right side
    99,503.93x = 9,491,169,944.87
  5. Step 5: Solve for x
    x = 9,491,169,944.87/99,503.93
  6. Step 6: Final answer
    x = 95,384.88

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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.