Home / 141,518.27-195,323.13-81,129.47

Finding the Fourth Proportional to 141,518.27, 195,323.13 and 81,129.47

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Solution

The fourth proportional to 141,518.27, 195,323.13 and 81,129.47 is: 111,974.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,518.27 : 195,323.13 = 81,129.47 : x
  2. Step 2: Convert to fraction form
    141,518.27/195,323.13 = 81,129.47/x
  3. Step 3: Cross multiply
    141,518.27x = 195,323.13 × 81,129.47
  4. Step 4: Simplify right side
    141,518.27x = 15,846,461,039.03
  5. Step 5: Solve for x
    x = 15,846,461,039.03/141,518.27
  6. Step 6: Final answer
    x = 111,974.66

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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.