Home / 149,103.30-205,768.18-85,453.36

Finding the Fourth Proportional to 149,103.30, 205,768.18 and 85,453.36

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Solution

The fourth proportional to 149,103.30, 205,768.18 and 85,453.36 is: 117,928.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,103.30 : 205,768.18 = 85,453.36 : x
  2. Step 2: Convert to fraction form
    149,103.30/205,768.18 = 85,453.36/x
  3. Step 3: Cross multiply
    149,103.30x = 205,768.18 × 85,453.36
  4. Step 4: Simplify right side
    149,103.30x = 17,583,582,362.08
  5. Step 5: Solve for x
    x = 17,583,582,362.08/149,103.30
  6. Step 6: Final answer
    x = 117,928.86

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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.