Home / 131,878.29-181,991.79-71,450.43

Finding the Fourth Proportional to 131,878.29, 181,991.79 and 71,450.43

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Solution

The fourth proportional to 131,878.29, 181,991.79 and 71,450.43 is: 98,601.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,878.29 : 181,991.79 = 71,450.43 : x
  2. Step 2: Convert to fraction form
    131,878.29/181,991.79 = 71,450.43/x
  3. Step 3: Cross multiply
    131,878.29x = 181,991.79 × 71,450.43
  4. Step 4: Simplify right side
    131,878.29x = 13,003,392,285.58
  5. Step 5: Solve for x
    x = 13,003,392,285.58/131,878.29
  6. Step 6: Final answer
    x = 98,601.46

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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.