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Finding the Fourth Proportional to 203,120.39, 304,708.94 and 84,764.61

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Solution

The fourth proportional to 203,120.39, 304,708.94 and 84,764.61 is: 127,158.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,120.39 : 304,708.94 = 84,764.61 : x
  2. Step 2: Convert to fraction form
    203,120.39/304,708.94 = 84,764.61/x
  3. Step 3: Cross multiply
    203,120.39x = 304,708.94 × 84,764.61
  4. Step 4: Simplify right side
    203,120.39x = 25,828,534,038.79
  5. Step 5: Solve for x
    x = 25,828,534,038.79/203,120.39
  6. Step 6: Final answer
    x = 127,158.75

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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.