Home / 149,720.24-206,601.52-85,172.30

Finding the Fourth Proportional to 149,720.24, 206,601.52 and 85,172.30

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Solution

The fourth proportional to 149,720.24, 206,601.52 and 85,172.30 is: 117,530.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,720.24 : 206,601.52 = 85,172.30 : x
  2. Step 2: Convert to fraction form
    149,720.24/206,601.52 = 85,172.30/x
  3. Step 3: Cross multiply
    149,720.24x = 206,601.52 × 85,172.30
  4. Step 4: Simplify right side
    149,720.24x = 17,596,726,641.90
  5. Step 5: Solve for x
    x = 17,596,726,641.90/149,720.24
  6. Step 6: Final answer
    x = 117,530.71

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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.