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Finding the Fourth Proportional to 163,818.43, 245,727.74 and 45,489.78

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Solution

The fourth proportional to 163,818.43, 245,727.74 and 45,489.78 is: 68,234.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,818.43 : 245,727.74 = 45,489.78 : x
  2. Step 2: Convert to fraction form
    163,818.43/245,727.74 = 45,489.78/x
  3. Step 3: Cross multiply
    163,818.43x = 245,727.74 × 45,489.78
  4. Step 4: Simplify right side
    163,818.43x = 11,178,100,946.22
  5. Step 5: Solve for x
    x = 11,178,100,946.22/163,818.43
  6. Step 6: Final answer
    x = 68,234.70

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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.