Home / 147,620.40-221,430.60-100,381.20

Finding the Fourth Proportional to 147,620.40, 221,430.60 and 100,381.20

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Solution

The fourth proportional to 147,620.40, 221,430.60 and 100,381.20 is: 150,571.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.40 : 221,430.60 = 100,381.20 : x
  2. Step 2: Convert to fraction form
    147,620.40/221,430.60 = 100,381.20/x
  3. Step 3: Cross multiply
    147,620.40x = 221,430.60 × 100,381.20
  4. Step 4: Simplify right side
    147,620.40x = 22,227,469,344.72
  5. Step 5: Solve for x
    x = 22,227,469,344.72/147,620.40
  6. Step 6: Final answer
    x = 150,571.80

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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.