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Finding the Fourth Proportional to 115,211.90, 171,837.72 and 113,218.09

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Solution

The fourth proportional to 115,211.90, 171,837.72 and 113,218.09 is: 168,863.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,211.90 : 171,837.72 = 113,218.09 : x
  2. Step 2: Convert to fraction form
    115,211.90/171,837.72 = 113,218.09/x
  3. Step 3: Cross multiply
    115,211.90x = 171,837.72 × 113,218.09
  4. Step 4: Simplify right side
    115,211.90x = 19,455,138,018.76
  5. Step 5: Solve for x
    x = 19,455,138,018.76/115,211.90
  6. Step 6: Final answer
    x = 168,863.96

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.