Home / 100,128.49-150,207.31-30,013.27

Finding the Fourth Proportional to 100,128.49, 150,207.31 and 30,013.27

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Solution

The fourth proportional to 100,128.49, 150,207.31 and 30,013.27 is: 45,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,128.49 : 150,207.31 = 30,013.27 : x
  2. Step 2: Convert to fraction form
    100,128.49/150,207.31 = 30,013.27/x
  3. Step 3: Cross multiply
    100,128.49x = 150,207.31 × 30,013.27
  4. Step 4: Simplify right side
    100,128.49x = 4,508,212,551.00
  5. Step 5: Solve for x
    x = 4,508,212,551.00/100,128.49
  6. Step 6: Final answer
    x = 45,024.27

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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.