Home / 141,918.40-195,847.80-78,254.80

Finding the Fourth Proportional to 141,918.40, 195,847.80 and 78,254.80

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Solution

The fourth proportional to 141,918.40, 195,847.80 and 78,254.80 is: 107,991.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,918.40 : 195,847.80 = 78,254.80 : x
  2. Step 2: Convert to fraction form
    141,918.40/195,847.80 = 78,254.80/x
  3. Step 3: Cross multiply
    141,918.40x = 195,847.80 × 78,254.80
  4. Step 4: Simplify right side
    141,918.40x = 15,326,030,419.44
  5. Step 5: Solve for x
    x = 15,326,030,419.44/141,918.40
  6. Step 6: Final answer
    x = 107,991.85

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1.5x scale

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.