Home / 100,538.28-150,603.30-47,149.56

Finding the Fourth Proportional to 100,538.28, 150,603.30 and 47,149.56

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Solution

The fourth proportional to 100,538.28, 150,603.30 and 47,149.56 is: 70,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,538.28 : 150,603.30 = 47,149.56 : x
  2. Step 2: Convert to fraction form
    100,538.28/150,603.30 = 47,149.56/x
  3. Step 3: Cross multiply
    100,538.28x = 150,603.30 × 47,149.56
  4. Step 4: Simplify right side
    100,538.28x = 7,100,879,329.55
  5. Step 5: Solve for x
    x = 7,100,879,329.55/100,538.28
  6. Step 6: Final answer
    x = 70,628.61

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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.