Home / 80,228.73-120,342.72-20,257.32

Finding the Fourth Proportional to 80,228.73, 120,342.72 and 20,257.32

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Solution

The fourth proportional to 80,228.73, 120,342.72 and 20,257.32 is: 30,385.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,228.73 : 120,342.72 = 20,257.32 : x
  2. Step 2: Convert to fraction form
    80,228.73/120,342.72 = 20,257.32/x
  3. Step 3: Cross multiply
    80,228.73x = 120,342.72 × 20,257.32
  4. Step 4: Simplify right side
    80,228.73x = 2,437,820,988.71
  5. Step 5: Solve for x
    x = 2,437,820,988.71/80,228.73
  6. Step 6: Final answer
    x = 30,385.89

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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.