Home / 80,112.31-120,176.69-30,234.40

Finding the Fourth Proportional to 80,112.31, 120,176.69 and 30,234.40

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Solution

The fourth proportional to 80,112.31, 120,176.69 and 30,234.40 is: 45,354.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,112.31 : 120,176.69 = 30,234.40 : x
  2. Step 2: Convert to fraction form
    80,112.31/120,176.69 = 30,234.40/x
  3. Step 3: Cross multiply
    80,112.31x = 120,176.69 × 30,234.40
  4. Step 4: Simplify right side
    80,112.31x = 3,633,470,116.14
  5. Step 5: Solve for x
    x = 3,633,470,116.14/80,112.31
  6. Step 6: Final answer
    x = 45,354.70

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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.