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Finding the Fourth Proportional to 117,246.38, 161,790.42 and 66,263.48

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Solution

The fourth proportional to 117,246.38, 161,790.42 and 66,263.48 is: 91,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,246.38 : 161,790.42 = 66,263.48 : x
  2. Step 2: Convert to fraction form
    117,246.38/161,790.42 = 66,263.48/x
  3. Step 3: Cross multiply
    117,246.38x = 161,790.42 × 66,263.48
  4. Step 4: Simplify right side
    117,246.38x = 10,720,796,259.86
  5. Step 5: Solve for x
    x = 10,720,796,259.86/117,246.38
  6. Step 6: Final answer
    x = 91,438.19

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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.