Home / 149,228.16-205,928.64-82,155.84

Finding the Fourth Proportional to 149,228.16, 205,928.64 and 82,155.84

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Solution

The fourth proportional to 149,228.16, 205,928.64 and 82,155.84 is: 113,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,228.16 : 205,928.64 = 82,155.84 : x
  2. Step 2: Convert to fraction form
    149,228.16/205,928.64 = 82,155.84/x
  3. Step 3: Cross multiply
    149,228.16x = 205,928.64 × 82,155.84
  4. Step 4: Simplify right side
    149,228.16x = 16,918,240,399.26
  5. Step 5: Solve for x
    x = 16,918,240,399.26/149,228.16
  6. Step 6: Final answer
    x = 113,371.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.