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Finding the Fourth Proportional to 122,409.28, 168,921.96 and 68,692.92

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Solution

The fourth proportional to 122,409.28, 168,921.96 and 68,692.92 is: 94,794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,409.28 : 168,921.96 = 68,692.92 : x
  2. Step 2: Convert to fraction form
    122,409.28/168,921.96 = 68,692.92/x
  3. Step 3: Cross multiply
    122,409.28x = 168,921.96 × 68,692.92
  4. Step 4: Simplify right side
    122,409.28x = 11,603,742,684.52
  5. Step 5: Solve for x
    x = 11,603,742,684.52/122,409.28
  6. Step 6: Final answer
    x = 94,794.63

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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.