Home / 193,037.64-289,457.72-80,687.21

Finding the Fourth Proportional to 193,037.64, 289,457.72 and 80,687.21

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Solution

The fourth proportional to 193,037.64, 289,457.72 and 80,687.21 is: 120,989.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,037.64 : 289,457.72 = 80,687.21 : x
  2. Step 2: Convert to fraction form
    193,037.64/289,457.72 = 80,687.21/x
  3. Step 3: Cross multiply
    193,037.64x = 289,457.72 × 80,687.21
  4. Step 4: Simplify right side
    193,037.64x = 23,355,533,989.04
  5. Step 5: Solve for x
    x = 23,355,533,989.04/193,037.64
  6. Step 6: Final answer
    x = 120,989.53

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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.