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Finding the Fourth Proportional to 155,956.66, 215,291.73 and 102,243.94

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Solution

The fourth proportional to 155,956.66, 215,291.73 and 102,243.94 is: 141,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,956.66 : 215,291.73 = 102,243.94 : x
  2. Step 2: Convert to fraction form
    155,956.66/215,291.73 = 102,243.94/x
  3. Step 3: Cross multiply
    155,956.66x = 215,291.73 × 102,243.94
  4. Step 4: Simplify right side
    155,956.66x = 22,012,274,724.62
  5. Step 5: Solve for x
    x = 22,012,274,724.62/155,956.66
  6. Step 6: Final answer
    x = 141,143.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.