Home / 136,169.22-187,836.84-81,707.30

Finding the Fourth Proportional to 136,169.22, 187,836.84 and 81,707.30

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Solution

The fourth proportional to 136,169.22, 187,836.84 and 81,707.30 is: 112,710.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,169.22 : 187,836.84 = 81,707.30 : x
  2. Step 2: Convert to fraction form
    136,169.22/187,836.84 = 81,707.30/x
  3. Step 3: Cross multiply
    136,169.22x = 187,836.84 × 81,707.30
  4. Step 4: Simplify right side
    136,169.22x = 15,347,641,036.93
  5. Step 5: Solve for x
    x = 15,347,641,036.93/136,169.22
  6. Step 6: Final answer
    x = 112,710.06

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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.