Home / 100,621.20-150,953.52-30,505.76

Finding the Fourth Proportional to 100,621.20, 150,953.52 and 30,505.76

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Solution

The fourth proportional to 100,621.20, 150,953.52 and 30,505.76 is: 45,765.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621.20 : 150,953.52 = 30,505.76 : x
  2. Step 2: Convert to fraction form
    100,621.20/150,953.52 = 30,505.76/x
  3. Step 3: Cross multiply
    100,621.20x = 150,953.52 × 30,505.76
  4. Step 4: Simplify right side
    100,621.20x = 4,604,951,852.28
  5. Step 5: Solve for x
    x = 4,604,951,852.28/100,621.20
  6. Step 6: Final answer
    x = 45,765.22

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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.