Home / 141,518.02-195,322.78-81,129.22

Finding the Fourth Proportional to 141,518.02, 195,322.78 and 81,129.22

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Solution

The fourth proportional to 141,518.02, 195,322.78 and 81,129.22 is: 111,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,518.02 : 195,322.78 = 81,129.22 : x
  2. Step 2: Convert to fraction form
    141,518.02/195,322.78 = 81,129.22/x
  3. Step 3: Cross multiply
    141,518.02x = 195,322.78 × 81,129.22
  4. Step 4: Simplify right side
    141,518.02x = 15,846,384,789.63
  5. Step 5: Solve for x
    x = 15,846,384,789.63/141,518.02
  6. Step 6: Final answer
    x = 111,974.33

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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.