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Finding the Fourth Proportional to 133,076.70, 199,615.05 and 91,086.30

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Solution

The fourth proportional to 133,076.70, 199,615.05 and 91,086.30 is: 136,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,076.70 : 199,615.05 = 91,086.30 : x
  2. Step 2: Convert to fraction form
    133,076.70/199,615.05 = 91,086.30/x
  3. Step 3: Cross multiply
    133,076.70x = 199,615.05 × 91,086.30
  4. Step 4: Simplify right side
    133,076.70x = 18,182,196,328.82
  5. Step 5: Solve for x
    x = 18,182,196,328.82/133,076.70
  6. Step 6: Final answer
    x = 136,629.45

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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.