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Finding the Fourth Proportional to 133,090.30, 199,635.45 and 80,602.30

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Solution

The fourth proportional to 133,090.30, 199,635.45 and 80,602.30 is: 120,903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,090.30 : 199,635.45 = 80,602.30 : x
  2. Step 2: Convert to fraction form
    133,090.30/199,635.45 = 80,602.30/x
  3. Step 3: Cross multiply
    133,090.30x = 199,635.45 × 80,602.30
  4. Step 4: Simplify right side
    133,090.30x = 16,091,076,431.54
  5. Step 5: Solve for x
    x = 16,091,076,431.54/133,090.30
  6. Step 6: Final answer
    x = 120,903.45

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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.