Home / 100,453.24-150,679.88-78,283.20

Finding the Fourth Proportional to 100,453.24, 150,679.88 and 78,283.20

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Solution

The fourth proportional to 100,453.24, 150,679.88 and 78,283.20 is: 117,424.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.24 : 150,679.88 = 78,283.20 : x
  2. Step 2: Convert to fraction form
    100,453.24/150,679.88 = 78,283.20/x
  3. Step 3: Cross multiply
    100,453.24x = 150,679.88 × 78,283.20
  4. Step 4: Simplify right side
    100,453.24x = 11,795,703,182.02
  5. Step 5: Solve for x
    x = 11,795,703,182.02/100,453.24
  6. Step 6: Final answer
    x = 117,424.82

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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.