Home / 80,953.12-120,615.76-76,426.03

Finding the Fourth Proportional to 80,953.12, 120,615.76 and 76,426.03

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Solution

The fourth proportional to 80,953.12, 120,615.76 and 76,426.03 is: 113,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,953.12 : 120,615.76 = 76,426.03 : x
  2. Step 2: Convert to fraction form
    80,953.12/120,615.76 = 76,426.03/x
  3. Step 3: Cross multiply
    80,953.12x = 120,615.76 × 76,426.03
  4. Step 4: Simplify right side
    80,953.12x = 9,218,183,723.59
  5. Step 5: Solve for x
    x = 9,218,183,723.59/80,953.12
  6. Step 6: Final answer
    x = 113,870.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.