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Finding the Fourth Proportional to 117,150.38, 161,679.46 and 84,471.68

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Solution

The fourth proportional to 117,150.38, 161,679.46 and 84,471.68 is: 116,579.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,150.38 : 161,679.46 = 84,471.68 : x
  2. Step 2: Convert to fraction form
    117,150.38/161,679.46 = 84,471.68/x
  3. Step 3: Cross multiply
    117,150.38x = 161,679.46 × 84,471.68
  4. Step 4: Simplify right side
    117,150.38x = 13,657,334,588.12
  5. Step 5: Solve for x
    x = 13,657,334,588.12/117,150.38
  6. Step 6: Final answer
    x = 116,579.52

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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.