Home / 145,147.55-200,299.74-80,614.85

Finding the Fourth Proportional to 145,147.55, 200,299.74 and 80,614.85

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Solution

The fourth proportional to 145,147.55, 200,299.74 and 80,614.85 is: 111,246.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,147.55 : 200,299.74 = 80,614.85 : x
  2. Step 2: Convert to fraction form
    145,147.55/200,299.74 = 80,614.85/x
  3. Step 3: Cross multiply
    145,147.55x = 200,299.74 × 80,614.85
  4. Step 4: Simplify right side
    145,147.55x = 16,147,132,191.33
  5. Step 5: Solve for x
    x = 16,147,132,191.33/145,147.55
  6. Step 6: Final answer
    x = 111,246.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.