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Finding the Fourth Proportional to 117,105.08, 161,604.87 and 63,390.08

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Solution

The fourth proportional to 117,105.08, 161,604.87 and 63,390.08 is: 87,478.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,105.08 : 161,604.87 = 63,390.08 : x
  2. Step 2: Convert to fraction form
    117,105.08/161,604.87 = 63,390.08/x
  3. Step 3: Cross multiply
    117,105.08x = 161,604.87 × 63,390.08
  4. Step 4: Simplify right side
    117,105.08x = 10,244,144,512.71
  5. Step 5: Solve for x
    x = 10,244,144,512.71/117,105.08
  6. Step 6: Final answer
    x = 87,478.23

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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.