Home / 141,728.40-212,074.20-129,286.80

Finding the Fourth Proportional to 141,728.40, 212,074.20 and 129,286.80

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Solution

The fourth proportional to 141,728.40, 212,074.20 and 129,286.80 is: 193,457.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,728.40 : 212,074.20 = 129,286.80 : x
  2. Step 2: Convert to fraction form
    141,728.40/212,074.20 = 129,286.80/x
  3. Step 3: Cross multiply
    141,728.40x = 212,074.20 × 129,286.80
  4. Step 4: Simplify right side
    141,728.40x = 27,418,394,680.56
  5. Step 5: Solve for x
    x = 27,418,394,680.56/141,728.40
  6. Step 6: Final answer
    x = 193,457.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.