Home / 80,628.53-120,262.49-70,015.08

Finding the Fourth Proportional to 80,628.53, 120,262.49 and 70,015.08

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Solution

The fourth proportional to 80,628.53, 120,262.49 and 70,015.08 is: 104,431.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,628.53 : 120,262.49 = 70,015.08 : x
  2. Step 2: Convert to fraction form
    80,628.53/120,262.49 = 70,015.08/x
  3. Step 3: Cross multiply
    80,628.53x = 120,262.49 × 70,015.08
  4. Step 4: Simplify right side
    80,628.53x = 8,420,188,221.81
  5. Step 5: Solve for x
    x = 8,420,188,221.81/80,628.53
  6. Step 6: Final answer
    x = 104,431.88

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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.