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Finding the Fourth Proportional to 169,603.39, 254,410.44 and 85,317.54

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Solution

The fourth proportional to 169,603.39, 254,410.44 and 85,317.54 is: 127,979.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,603.39 : 254,410.44 = 85,317.54 : x
  2. Step 2: Convert to fraction form
    169,603.39/254,410.44 = 85,317.54/x
  3. Step 3: Cross multiply
    169,603.39x = 254,410.44 × 85,317.54
  4. Step 4: Simplify right side
    169,603.39x = 21,705,672,891.12
  5. Step 5: Solve for x
    x = 21,705,672,891.12/169,603.39
  6. Step 6: Final answer
    x = 127,979.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.