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Finding the Fourth Proportional to 118,285.48, 163,234.02 and 67,981.48

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Solution

The fourth proportional to 118,285.48, 163,234.02 and 67,981.48 is: 93,814.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,285.48 : 163,234.02 = 67,981.48 : x
  2. Step 2: Convert to fraction form
    118,285.48/163,234.02 = 67,981.48/x
  3. Step 3: Cross multiply
    118,285.48x = 163,234.02 × 67,981.48
  4. Step 4: Simplify right side
    118,285.48x = 11,096,890,265.95
  5. Step 5: Solve for x
    x = 11,096,890,265.95/118,285.48
  6. Step 6: Final answer
    x = 93,814.48

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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.