Home / 120,206.76-180,366.84-53,640.96

Finding the Fourth Proportional to 120,206.76, 180,366.84 and 53,640.96

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Solution

The fourth proportional to 120,206.76, 180,366.84 and 53,640.96 is: 80,486.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,206.76 : 180,366.84 = 53,640.96 : x
  2. Step 2: Convert to fraction form
    120,206.76/180,366.84 = 53,640.96/x
  3. Step 3: Cross multiply
    120,206.76x = 180,366.84 × 53,640.96
  4. Step 4: Simplify right side
    120,206.76x = 9,675,050,449.77
  5. Step 5: Solve for x
    x = 9,675,050,449.77/120,206.76
  6. Step 6: Final answer
    x = 80,486.74

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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.