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Finding the Fourth Proportional to 133,090.81, 199,470.07 and 66,549.97

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Solution

The fourth proportional to 133,090.81, 199,470.07 and 66,549.97 is: 99,741.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,090.81 : 199,470.07 = 66,549.97 : x
  2. Step 2: Convert to fraction form
    133,090.81/199,470.07 = 66,549.97/x
  3. Step 3: Cross multiply
    133,090.81x = 199,470.07 × 66,549.97
  4. Step 4: Simplify right side
    133,090.81x = 13,274,727,174.40
  5. Step 5: Solve for x
    x = 13,274,727,174.40/133,090.81
  6. Step 6: Final answer
    x = 99,741.88

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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.