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Finding the Fourth Proportional to 120,757.34, 166,636.81 and 67,038.20

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Solution

The fourth proportional to 120,757.34, 166,636.81 and 67,038.20 is: 92,508.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,757.34 : 166,636.81 = 67,038.20 : x
  2. Step 2: Convert to fraction form
    120,757.34/166,636.81 = 67,038.20/x
  3. Step 3: Cross multiply
    120,757.34x = 166,636.81 × 67,038.20
  4. Step 4: Simplify right side
    120,757.34x = 11,171,030,627.77
  5. Step 5: Solve for x
    x = 11,171,030,627.77/120,757.34
  6. Step 6: Final answer
    x = 92,508.09

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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.