Home / 146,172.20-218,912.70-99,170.60

Finding the Fourth Proportional to 146,172.20, 218,912.70 and 99,170.60

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Solution

The fourth proportional to 146,172.20, 218,912.70 and 99,170.60 is: 148,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,172.20 : 218,912.70 = 99,170.60 : x
  2. Step 2: Convert to fraction form
    146,172.20/218,912.70 = 99,170.60/x
  3. Step 3: Cross multiply
    146,172.20x = 218,912.70 × 99,170.60
  4. Step 4: Simplify right side
    146,172.20x = 21,709,703,806.62
  5. Step 5: Solve for x
    x = 21,709,703,806.62/146,172.20
  6. Step 6: Final answer
    x = 148,521.43

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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.