Home / 165,915.30-248,696.90-81,556.50

Finding the Fourth Proportional to 165,915.30, 248,696.90 and 81,556.50

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Solution

The fourth proportional to 165,915.30, 248,696.90 and 81,556.50 is: 122,248.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,915.30 : 248,696.90 = 81,556.50 : x
  2. Step 2: Convert to fraction form
    165,915.30/248,696.90 = 81,556.50/x
  3. Step 3: Cross multiply
    165,915.30x = 248,696.90 × 81,556.50
  4. Step 4: Simplify right side
    165,915.30x = 20,282,848,724.85
  5. Step 5: Solve for x
    x = 20,282,848,724.85/165,915.30
  6. Step 6: Final answer
    x = 122,248.21

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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.