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Finding the Fourth Proportional to 160,336.82, 221,168.40 and 105,889.49

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Solution

The fourth proportional to 160,336.82, 221,168.40 and 105,889.49 is: 146,063.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,336.82 : 221,168.40 = 105,889.49 : x
  2. Step 2: Convert to fraction form
    160,336.82/221,168.40 = 105,889.49/x
  3. Step 3: Cross multiply
    160,336.82x = 221,168.40 × 105,889.49
  4. Step 4: Simplify right side
    160,336.82x = 23,419,408,406.57
  5. Step 5: Solve for x
    x = 23,419,408,406.57/160,336.82
  6. Step 6: Final answer
    x = 146,063.82

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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.