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Finding the Fourth Proportional to 153,956.60, 231,129.30 and 82,935.80

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Solution

The fourth proportional to 153,956.60, 231,129.30 and 82,935.80 is: 124,508.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,956.60 : 231,129.30 = 82,935.80 : x
  2. Step 2: Convert to fraction form
    153,956.60/231,129.30 = 82,935.80/x
  3. Step 3: Cross multiply
    153,956.60x = 231,129.30 × 82,935.80
  4. Step 4: Simplify right side
    153,956.60x = 19,168,893,398.94
  5. Step 5: Solve for x
    x = 19,168,893,398.94/153,956.60
  6. Step 6: Final answer
    x = 124,508.42

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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.