Home / 149,814.72-206,755.20-86,172.48

Finding the Fourth Proportional to 149,814.72, 206,755.20 and 86,172.48

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Solution

The fourth proportional to 149,814.72, 206,755.20 and 86,172.48 is: 118,924.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,814.72 : 206,755.20 = 86,172.48 : x
  2. Step 2: Convert to fraction form
    149,814.72/206,755.20 = 86,172.48/x
  3. Step 3: Cross multiply
    149,814.72x = 206,755.20 × 86,172.48
  4. Step 4: Simplify right side
    149,814.72x = 17,816,608,336.90
  5. Step 5: Solve for x
    x = 17,816,608,336.90/149,814.72
  6. Step 6: Final answer
    x = 118,924.28

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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.