Home / 100,415.07-150,622.64-38,085.57

Finding the Fourth Proportional to 100,415.07, 150,622.64 and 38,085.57

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Solution

The fourth proportional to 100,415.07, 150,622.64 and 38,085.57 is: 57,128.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,415.07 : 150,622.64 = 38,085.57 : x
  2. Step 2: Convert to fraction form
    100,415.07/150,622.64 = 38,085.57/x
  3. Step 3: Cross multiply
    100,415.07x = 150,622.64 × 38,085.57
  4. Step 4: Simplify right side
    100,415.07x = 5,736,548,908.88
  5. Step 5: Solve for x
    x = 5,736,548,908.88/100,415.07
  6. Step 6: Final answer
    x = 57,128.37

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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.