Home / 188,220.40-282,157.35-81,537.31

Finding the Fourth Proportional to 188,220.40, 282,157.35 and 81,537.31

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Solution

The fourth proportional to 188,220.40, 282,157.35 and 81,537.31 is: 122,230.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,220.40 : 282,157.35 = 81,537.31 : x
  2. Step 2: Convert to fraction form
    188,220.40/282,157.35 = 81,537.31/x
  3. Step 3: Cross multiply
    188,220.40x = 282,157.35 × 81,537.31
  4. Step 4: Simplify right side
    188,220.40x = 23,006,351,315.73
  5. Step 5: Solve for x
    x = 23,006,351,315.73/188,220.40
  6. Step 6: Final answer
    x = 122,230.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.