Home / 148,128.80-222,212.40-73,287.20

Finding the Fourth Proportional to 148,128.80, 222,212.40 and 73,287.20

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Solution

The fourth proportional to 148,128.80, 222,212.40 and 73,287.20 is: 109,940.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,128.80 : 222,212.40 = 73,287.20 : x
  2. Step 2: Convert to fraction form
    148,128.80/222,212.40 = 73,287.20/x
  3. Step 3: Cross multiply
    148,128.80x = 222,212.40 × 73,287.20
  4. Step 4: Simplify right side
    148,128.80x = 16,285,324,601.28
  5. Step 5: Solve for x
    x = 16,285,324,601.28/148,128.80
  6. Step 6: Final answer
    x = 109,940.30

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1.5x scale

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.