Home / 80,895.23-121,342.85-80,778.41

Finding the Fourth Proportional to 80,895.23, 121,342.85 and 80,778.41

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Solution

The fourth proportional to 80,895.23, 121,342.85 and 80,778.41 is: 121,167.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,895.23 : 121,342.85 = 80,778.41 : x
  2. Step 2: Convert to fraction form
    80,895.23/121,342.85 = 80,778.41/x
  3. Step 3: Cross multiply
    80,895.23x = 121,342.85 × 80,778.41
  4. Step 4: Simplify right side
    80,895.23x = 9,801,882,083.98
  5. Step 5: Solve for x
    x = 9,801,882,083.98/80,895.23
  6. Step 6: Final answer
    x = 121,167.62

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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.