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Finding the Fourth Proportional to 203,146.60, 304,892.70 and 90,999.40

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Solution

The fourth proportional to 203,146.60, 304,892.70 and 90,999.40 is: 136,576.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,146.60 : 304,892.70 = 90,999.40 : x
  2. Step 2: Convert to fraction form
    203,146.60/304,892.70 = 90,999.40/x
  3. Step 3: Cross multiply
    203,146.60x = 304,892.70 × 90,999.40
  4. Step 4: Simplify right side
    203,146.60x = 27,745,052,764.38
  5. Step 5: Solve for x
    x = 27,745,052,764.38/203,146.60
  6. Step 6: Final answer
    x = 136,576.51

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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.