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Finding the Fourth Proportional to 133,668.55, 200,378.23 and 67,030.81

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Solution

The fourth proportional to 133,668.55, 200,378.23 and 67,030.81 is: 100,483.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,668.55 : 200,378.23 = 67,030.81 : x
  2. Step 2: Convert to fraction form
    133,668.55/200,378.23 = 67,030.81/x
  3. Step 3: Cross multiply
    133,668.55x = 200,378.23 × 67,030.81
  4. Step 4: Simplify right side
    133,668.55x = 13,431,515,063.27
  5. Step 5: Solve for x
    x = 13,431,515,063.27/133,668.55
  6. Step 6: Final answer
    x = 100,483.73

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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.