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Finding the Fourth Proportional to 146,738.60, 220,107.90 and 145,356.20

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Solution

The fourth proportional to 146,738.60, 220,107.90 and 145,356.20 is: 218,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,738.60 : 220,107.90 = 145,356.20 : x
  2. Step 2: Convert to fraction form
    146,738.60/220,107.90 = 145,356.20/x
  3. Step 3: Cross multiply
    146,738.60x = 220,107.90 × 145,356.20
  4. Step 4: Simplify right side
    146,738.60x = 31,994,047,933.98
  5. Step 5: Solve for x
    x = 31,994,047,933.98/146,738.60
  6. Step 6: Final answer
    x = 218,034.30

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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.