Home / 141,424.40-195,151.56-81,009.20

Finding the Fourth Proportional to 141,424.40, 195,151.56 and 81,009.20

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Solution

The fourth proportional to 141,424.40, 195,151.56 and 81,009.20 is: 111,784.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,424.40 : 195,151.56 = 81,009.20 : x
  2. Step 2: Convert to fraction form
    141,424.40/195,151.56 = 81,009.20/x
  3. Step 3: Cross multiply
    141,424.40x = 195,151.56 × 81,009.20
  4. Step 4: Simplify right side
    141,424.40x = 15,809,071,754.35
  5. Step 5: Solve for x
    x = 15,809,071,754.35/141,424.40
  6. Step 6: Final answer
    x = 111,784.61

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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.