Home / 100,139.82-150,209.76-30,019.14

Finding the Fourth Proportional to 100,139.82, 150,209.76 and 30,019.14

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Solution

The fourth proportional to 100,139.82, 150,209.76 and 30,019.14 is: 45,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,139.82 : 150,209.76 = 30,019.14 : x
  2. Step 2: Convert to fraction form
    100,139.82/150,209.76 = 30,019.14/x
  3. Step 3: Cross multiply
    100,139.82x = 150,209.76 × 30,019.14
  4. Step 4: Simplify right side
    100,139.82x = 4,509,167,814.81
  5. Step 5: Solve for x
    x = 4,509,167,814.81/100,139.82
  6. Step 6: Final answer
    x = 45,028.72

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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.