Home / 80,529.92-120,252.58-65,768.12

Finding the Fourth Proportional to 80,529.92, 120,252.58 and 65,768.12

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Solution

The fourth proportional to 80,529.92, 120,252.58 and 65,768.12 is: 98,209.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,529.92 : 120,252.58 = 65,768.12 : x
  2. Step 2: Convert to fraction form
    80,529.92/120,252.58 = 65,768.12/x
  3. Step 3: Cross multiply
    80,529.92x = 120,252.58 × 65,768.12
  4. Step 4: Simplify right side
    80,529.92x = 7,908,786,111.75
  5. Step 5: Solve for x
    x = 7,908,786,111.75/80,529.92
  6. Step 6: Final answer
    x = 98,209.29

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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.