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Finding the Fourth Proportional to 117,170.93, 161,698.83 and 71,873.89

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Solution

The fourth proportional to 117,170.93, 161,698.83 and 71,873.89 is: 99,187.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,170.93 : 161,698.83 = 71,873.89 : x
  2. Step 2: Convert to fraction form
    117,170.93/161,698.83 = 71,873.89/x
  3. Step 3: Cross multiply
    117,170.93x = 161,698.83 × 71,873.89
  4. Step 4: Simplify right side
    117,170.93x = 11,621,923,291.74
  5. Step 5: Solve for x
    x = 11,621,923,291.74/117,170.93
  6. Step 6: Final answer
    x = 99,187.77

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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.