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Finding the Fourth Proportional to 162,811.61, 244,375.06 and 78,630.94

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Solution

The fourth proportional to 162,811.61, 244,375.06 and 78,630.94 is: 118,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,811.61 : 244,375.06 = 78,630.94 : x
  2. Step 2: Convert to fraction form
    162,811.61/244,375.06 = 78,630.94/x
  3. Step 3: Cross multiply
    162,811.61x = 244,375.06 × 78,630.94
  4. Step 4: Simplify right side
    162,811.61x = 19,215,440,680.36
  5. Step 5: Solve for x
    x = 19,215,440,680.36/162,811.61
  6. Step 6: Final answer
    x = 118,022.55

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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.