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Finding the Fourth Proportional to 117,288.70, 161,854.46 and 69,513.68

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Solution

The fourth proportional to 117,288.70, 161,854.46 and 69,513.68 is: 95,926.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,288.70 : 161,854.46 = 69,513.68 : x
  2. Step 2: Convert to fraction form
    117,288.70/161,854.46 = 69,513.68/x
  3. Step 3: Cross multiply
    117,288.70x = 161,854.46 × 69,513.68
  4. Step 4: Simplify right side
    117,288.70x = 11,251,099,139.01
  5. Step 5: Solve for x
    x = 11,251,099,139.01/117,288.70
  6. Step 6: Final answer
    x = 95,926.54

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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.