Home / 120,855.36-166,776.66-67,138.98

Finding the Fourth Proportional to 120,855.36, 166,776.66 and 67,138.98

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Solution

The fourth proportional to 120,855.36, 166,776.66 and 67,138.98 is: 92,649.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,855.36 : 166,776.66 = 67,138.98 : x
  2. Step 2: Convert to fraction form
    120,855.36/166,776.66 = 67,138.98/x
  3. Step 3: Cross multiply
    120,855.36x = 166,776.66 × 67,138.98
  4. Step 4: Simplify right side
    120,855.36x = 11,197,214,840.21
  5. Step 5: Solve for x
    x = 11,197,214,840.21/120,855.36
  6. Step 6: Final answer
    x = 92,649.72

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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.