Home / 100,128.36-150,207.12-30,013.14

Finding the Fourth Proportional to 100,128.36, 150,207.12 and 30,013.14

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Solution

The fourth proportional to 100,128.36, 150,207.12 and 30,013.14 is: 45,024.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,128.36 : 150,207.12 = 30,013.14 : x
  2. Step 2: Convert to fraction form
    100,128.36/150,207.12 = 30,013.14/x
  3. Step 3: Cross multiply
    100,128.36x = 150,207.12 × 30,013.14
  4. Step 4: Simplify right side
    100,128.36x = 4,508,187,321.56
  5. Step 5: Solve for x
    x = 4,508,187,321.56/100,128.36
  6. Step 6: Final answer
    x = 45,024.08

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1.5x scale

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.