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Finding the Fourth Proportional to 117,104.87, 161,604.81 and 63,389.72

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Solution

The fourth proportional to 117,104.87, 161,604.81 and 63,389.72 is: 87,477.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,104.87 : 161,604.81 = 63,389.72 : x
  2. Step 2: Convert to fraction form
    117,104.87/161,604.81 = 63,389.72/x
  3. Step 3: Cross multiply
    117,104.87x = 161,604.81 × 63,389.72
  4. Step 4: Simplify right side
    117,104.87x = 10,244,082,848.53
  5. Step 5: Solve for x
    x = 10,244,082,848.53/117,104.87
  6. Step 6: Final answer
    x = 87,477.86

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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.