Home / 141,721.25-195,571.26-77,189

Finding the Fourth Proportional to 141,721.25, 195,571.26 and 77,189

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Solution

The fourth proportional to 141,721.25, 195,571.26 and 77,189 is: 106,518.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,721.25 : 195,571.26 = 77,189 : x
  2. Step 2: Convert to fraction form
    141,721.25/195,571.26 = 77,189/x
  3. Step 3: Cross multiply
    141,721.25x = 195,571.26 × 77,189
  4. Step 4: Simplify right side
    141,721.25x = 15,095,949,988.14
  5. Step 5: Solve for x
    x = 15,095,949,988.14/141,721.25
  6. Step 6: Final answer
    x = 106,518.61

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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.