Home / 141,905.48-195,820.62-78,243.80

Finding the Fourth Proportional to 141,905.48, 195,820.62 and 78,243.80

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Solution

The fourth proportional to 141,905.48, 195,820.62 and 78,243.80 is: 107,971.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,905.48 : 195,820.62 = 78,243.80 : x
  2. Step 2: Convert to fraction form
    141,905.48/195,820.62 = 78,243.80/x
  3. Step 3: Cross multiply
    141,905.48x = 195,820.62 × 78,243.80
  4. Step 4: Simplify right side
    141,905.48x = 15,321,748,448.05
  5. Step 5: Solve for x
    x = 15,321,748,448.05/141,905.48
  6. Step 6: Final answer
    x = 107,971.51

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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.