Home / 100,758.20-151,142.70-30,632.18

Finding the Fourth Proportional to 100,758.20, 151,142.70 and 30,632.18

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Solution

The fourth proportional to 100,758.20, 151,142.70 and 30,632.18 is: 45,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,758.20 : 151,142.70 = 30,632.18 : x
  2. Step 2: Convert to fraction form
    100,758.20/151,142.70 = 30,632.18/x
  3. Step 3: Cross multiply
    100,758.20x = 151,142.70 × 30,632.18
  4. Step 4: Simplify right side
    100,758.20x = 4,629,830,392.09
  5. Step 5: Solve for x
    x = 4,629,830,392.09/100,758.20
  6. Step 6: Final answer
    x = 45,949.91

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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.