Home / 149,542.72-206,381.36-85,892.80

Finding the Fourth Proportional to 149,542.72, 206,381.36 and 85,892.80

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Solution

The fourth proportional to 149,542.72, 206,381.36 and 85,892.80 is: 118,539.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,542.72 : 206,381.36 = 85,892.80 : x
  2. Step 2: Convert to fraction form
    149,542.72/206,381.36 = 85,892.80/x
  3. Step 3: Cross multiply
    149,542.72x = 206,381.36 × 85,892.80
  4. Step 4: Simplify right side
    149,542.72x = 17,726,672,878.21
  5. Step 5: Solve for x
    x = 17,726,672,878.21/149,542.72
  6. Step 6: Final answer
    x = 118,539.19

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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.