Home / 100,411.20-150,530.40-51,163.20

Finding the Fourth Proportional to 100,411.20, 150,530.40 and 51,163.20

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Solution

The fourth proportional to 100,411.20, 150,530.40 and 51,163.20 is: 76,700.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,411.20 : 150,530.40 = 51,163.20 : x
  2. Step 2: Convert to fraction form
    100,411.20/150,530.40 = 51,163.20/x
  3. Step 3: Cross multiply
    100,411.20x = 150,530.40 × 51,163.20
  4. Step 4: Simplify right side
    100,411.20x = 7,701,616,961.28
  5. Step 5: Solve for x
    x = 7,701,616,961.28/100,411.20
  6. Step 6: Final answer
    x = 76,700.78

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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.