Home / 131,809.36-181,896.96-72,193.36

Finding the Fourth Proportional to 131,809.36, 181,896.96 and 72,193.36

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Solution

The fourth proportional to 131,809.36, 181,896.96 and 72,193.36 is: 99,626.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.36 : 181,896.96 = 72,193.36 : x
  2. Step 2: Convert to fraction form
    131,809.36/181,896.96 = 72,193.36/x
  3. Step 3: Cross multiply
    131,809.36x = 181,896.96 × 72,193.36
  4. Step 4: Simplify right side
    131,809.36x = 13,131,752,716.19
  5. Step 5: Solve for x
    x = 13,131,752,716.19/131,809.36
  6. Step 6: Final answer
    x = 99,626.86

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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.