Home / 136,161.22-187,825.79-81,699.31

Finding the Fourth Proportional to 136,161.22, 187,825.79 and 81,699.31

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Solution

The fourth proportional to 136,161.22, 187,825.79 and 81,699.31 is: 112,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,161.22 : 187,825.79 = 81,699.31 : x
  2. Step 2: Convert to fraction form
    136,161.22/187,825.79 = 81,699.31/x
  3. Step 3: Cross multiply
    136,161.22x = 187,825.79 × 81,699.31
  4. Step 4: Simplify right side
    136,161.22x = 15,345,237,177.89
  5. Step 5: Solve for x
    x = 15,345,237,177.89/136,161.22
  6. Step 6: Final answer
    x = 112,699.03

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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.