Home / 148,623.43-205,100.06-80,640.39

Finding the Fourth Proportional to 148,623.43, 205,100.06 and 80,640.39

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Solution

The fourth proportional to 148,623.43, 205,100.06 and 80,640.39 is: 111,283.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,623.43 : 205,100.06 = 80,640.39 : x
  2. Step 2: Convert to fraction form
    148,623.43/205,100.06 = 80,640.39/x
  3. Step 3: Cross multiply
    148,623.43x = 205,100.06 × 80,640.39
  4. Step 4: Simplify right side
    148,623.43x = 16,539,348,424.22
  5. Step 5: Solve for x
    x = 16,539,348,424.22/148,623.43
  6. Step 6: Final answer
    x = 111,283.59

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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.