Home / 141,685.11-195,504.78-80,421.78

Finding the Fourth Proportional to 141,685.11, 195,504.78 and 80,421.78

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Solution

The fourth proportional to 141,685.11, 195,504.78 and 80,421.78 is: 110,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,685.11 : 195,504.78 = 80,421.78 : x
  2. Step 2: Convert to fraction form
    141,685.11/195,504.78 = 80,421.78/x
  3. Step 3: Cross multiply
    141,685.11x = 195,504.78 × 80,421.78
  4. Step 4: Simplify right side
    141,685.11x = 15,722,842,406.11
  5. Step 5: Solve for x
    x = 15,722,842,406.11/141,685.11
  6. Step 6: Final answer
    x = 110,970.32

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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.