Home / 141,380.28-195,107.22-77,720.76

Finding the Fourth Proportional to 141,380.28, 195,107.22 and 77,720.76

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Solution

The fourth proportional to 141,380.28, 195,107.22 and 77,720.76 is: 107,255.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,380.28 : 195,107.22 = 77,720.76 : x
  2. Step 2: Convert to fraction form
    141,380.28/195,107.22 = 77,720.76/x
  3. Step 3: Cross multiply
    141,380.28x = 195,107.22 × 77,720.76
  4. Step 4: Simplify right side
    141,380.28x = 15,163,881,419.89
  5. Step 5: Solve for x
    x = 15,163,881,419.89/141,380.28
  6. Step 6: Final answer
    x = 107,255.99

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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.