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Finding the Fourth Proportional to 159,036.75, 238,425.57 and 87,956.55

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Solution

The fourth proportional to 159,036.75, 238,425.57 and 87,956.55 is: 131,863.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,036.75 : 238,425.57 = 87,956.55 : x
  2. Step 2: Convert to fraction form
    159,036.75/238,425.57 = 87,956.55/x
  3. Step 3: Cross multiply
    159,036.75x = 238,425.57 × 87,956.55
  4. Step 4: Simplify right side
    159,036.75x = 20,971,090,568.98
  5. Step 5: Solve for x
    x = 20,971,090,568.98/159,036.75
  6. Step 6: Final answer
    x = 131,863.17

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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.