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Finding the Fourth Proportional to 118,615, 163,688.82 and 68,314.12

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Solution

The fourth proportional to 118,615, 163,688.82 and 68,314.12 is: 94,273.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,615 : 163,688.82 = 68,314.12 : x
  2. Step 2: Convert to fraction form
    118,615/163,688.82 = 68,314.12/x
  3. Step 3: Cross multiply
    118,615x = 163,688.82 × 68,314.12
  4. Step 4: Simplify right side
    118,615x = 11,182,257,692.14
  5. Step 5: Solve for x
    x = 11,182,257,692.14/118,615
  6. Step 6: Final answer
    x = 94,273.55

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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.