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Finding the Fourth Proportional to 117,371.36, 161,947.14 and 69,640.50

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Solution

The fourth proportional to 117,371.36, 161,947.14 and 69,640.50 is: 96,088.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,371.36 : 161,947.14 = 69,640.50 : x
  2. Step 2: Convert to fraction form
    117,371.36/161,947.14 = 69,640.50/x
  3. Step 3: Cross multiply
    117,371.36x = 161,947.14 × 69,640.50
  4. Step 4: Simplify right side
    117,371.36x = 11,278,079,803.17
  5. Step 5: Solve for x
    x = 11,278,079,803.17/117,371.36
  6. Step 6: Final answer
    x = 96,088.86

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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.