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Finding the Fourth Proportional to 132,690.70, 199,118.06 and 53,805.61

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Solution

The fourth proportional to 132,690.70, 199,118.06 and 53,805.61 is: 80,741.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,690.70 : 199,118.06 = 53,805.61 : x
  2. Step 2: Convert to fraction form
    132,690.70/199,118.06 = 53,805.61/x
  3. Step 3: Cross multiply
    132,690.70x = 199,118.06 × 53,805.61
  4. Step 4: Simplify right side
    132,690.70x = 10,713,668,680.32
  5. Step 5: Solve for x
    x = 10,713,668,680.32/132,690.70
  6. Step 6: Final answer
    x = 80,741.67

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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.