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Finding the Fourth Proportional to 118,263.78, 163,208.88 and 67,285.44

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Solution

The fourth proportional to 118,263.78, 163,208.88 and 67,285.44 is: 92,856.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,263.78 : 163,208.88 = 67,285.44 : x
  2. Step 2: Convert to fraction form
    118,263.78/163,208.88 = 67,285.44/x
  3. Step 3: Cross multiply
    118,263.78x = 163,208.88 × 67,285.44
  4. Step 4: Simplify right side
    118,263.78x = 10,981,581,302.71
  5. Step 5: Solve for x
    x = 10,981,581,302.71/118,263.78
  6. Step 6: Final answer
    x = 92,856.67

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1.5x scale

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.