Home / 100,453.43-150,680.12-78,283.38

Finding the Fourth Proportional to 100,453.43, 150,680.12 and 78,283.38

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Solution

The fourth proportional to 100,453.43, 150,680.12 and 78,283.38 is: 117,425.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,453.43 : 150,680.12 = 78,283.38 : x
  2. Step 2: Convert to fraction form
    100,453.43/150,680.12 = 78,283.38/x
  3. Step 3: Cross multiply
    100,453.43x = 150,680.12 × 78,283.38
  4. Step 4: Simplify right side
    100,453.43x = 11,795,748,700.99
  5. Step 5: Solve for x
    x = 11,795,748,700.99/100,453.43
  6. Step 6: Final answer
    x = 117,425.05

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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.