Home / 141,899.04-195,820.56-78,237.90

Finding the Fourth Proportional to 141,899.04, 195,820.56 and 78,237.90

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Solution

The fourth proportional to 141,899.04, 195,820.56 and 78,237.90 is: 107,968.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,899.04 : 195,820.56 = 78,237.90 : x
  2. Step 2: Convert to fraction form
    141,899.04/195,820.56 = 78,237.90/x
  3. Step 3: Cross multiply
    141,899.04x = 195,820.56 × 78,237.90
  4. Step 4: Simplify right side
    141,899.04x = 15,320,589,391.22
  5. Step 5: Solve for x
    x = 15,320,589,391.22/141,899.04
  6. Step 6: Final answer
    x = 107,968.24

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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.