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Finding the Fourth Proportional to 120,408.01, 166,161.21 and 65,959.76

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Solution

The fourth proportional to 120,408.01, 166,161.21 and 65,959.76 is: 91,023.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,408.01 : 166,161.21 = 65,959.76 : x
  2. Step 2: Convert to fraction form
    120,408.01/166,161.21 = 65,959.76/x
  3. Step 3: Cross multiply
    120,408.01x = 166,161.21 × 65,959.76
  4. Step 4: Simplify right side
    120,408.01x = 10,959,953,532.91
  5. Step 5: Solve for x
    x = 10,959,953,532.91/120,408.01
  6. Step 6: Final answer
    x = 91,023.46

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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.