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Finding the Fourth Proportional to 133,313.80, 200,080.05 and 128,939.80

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Solution

The fourth proportional to 133,313.80, 200,080.05 and 128,939.80 is: 193,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,313.80 : 200,080.05 = 128,939.80 : x
  2. Step 2: Convert to fraction form
    133,313.80/200,080.05 = 128,939.80/x
  3. Step 3: Cross multiply
    133,313.80x = 200,080.05 × 128,939.80
  4. Step 4: Simplify right side
    133,313.80x = 25,798,281,630.99
  5. Step 5: Solve for x
    x = 25,798,281,630.99/133,313.80
  6. Step 6: Final answer
    x = 193,515.46

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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.