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Finding the Fourth Proportional to 100,379.40, 150,594.36 and 70,854.84

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Solution

The fourth proportional to 100,379.40, 150,594.36 and 70,854.84 is: 106,300.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,379.40 : 150,594.36 = 70,854.84 : x
  2. Step 2: Convert to fraction form
    100,379.40/150,594.36 = 70,854.84/x
  3. Step 3: Cross multiply
    100,379.40x = 150,594.36 × 70,854.84
  4. Step 4: Simplify right side
    100,379.40x = 10,670,339,282.70
  5. Step 5: Solve for x
    x = 10,670,339,282.70/100,379.40
  6. Step 6: Final answer
    x = 106,300.09

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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.