Home / 140,720.28-194,195.55-76,190.91

Finding the Fourth Proportional to 140,720.28, 194,195.55 and 76,190.91

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Solution

The fourth proportional to 140,720.28, 194,195.55 and 76,190.91 is: 105,144.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,720.28 : 194,195.55 = 76,190.91 : x
  2. Step 2: Convert to fraction form
    140,720.28/194,195.55 = 76,190.91/x
  3. Step 3: Cross multiply
    140,720.28x = 194,195.55 × 76,190.91
  4. Step 4: Simplify right side
    140,720.28x = 14,795,935,672.45
  5. Step 5: Solve for x
    x = 14,795,935,672.45/140,720.28
  6. Step 6: Final answer
    x = 105,144.30

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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.