Home / 149,128.24-205,801.82-85,478.04

Finding the Fourth Proportional to 149,128.24, 205,801.82 and 85,478.04

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Solution

The fourth proportional to 149,128.24, 205,801.82 and 85,478.04 is: 117,962.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,128.24 : 205,801.82 = 85,478.04 : x
  2. Step 2: Convert to fraction form
    149,128.24/205,801.82 = 85,478.04/x
  3. Step 3: Cross multiply
    149,128.24x = 205,801.82 × 85,478.04
  4. Step 4: Simplify right side
    149,128.24x = 17,591,536,202.03
  5. Step 5: Solve for x
    x = 17,591,536,202.03/149,128.24
  6. Step 6: Final answer
    x = 117,962.47

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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.