Home / 100,748.70-151,131.51-30,628.62

Finding the Fourth Proportional to 100,748.70, 151,131.51 and 30,628.62

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Solution

The fourth proportional to 100,748.70, 151,131.51 and 30,628.62 is: 45,945.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,748.70 : 151,131.51 = 30,628.62 : x
  2. Step 2: Convert to fraction form
    100,748.70/151,131.51 = 30,628.62/x
  3. Step 3: Cross multiply
    100,748.70x = 151,131.51 × 30,628.62
  4. Step 4: Simplify right side
    100,748.70x = 4,628,949,589.82
  5. Step 5: Solve for x
    x = 4,628,949,589.82/100,748.70
  6. Step 6: Final answer
    x = 45,945.50

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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.