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Finding the Fourth Proportional to 120,415.01, 166,174.03 and 66,700.87

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Solution

The fourth proportional to 120,415.01, 166,174.03 and 66,700.87 is: 92,047.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,415.01 : 166,174.03 = 66,700.87 : x
  2. Step 2: Convert to fraction form
    120,415.01/166,174.03 = 66,700.87/x
  3. Step 3: Cross multiply
    120,415.01x = 166,174.03 × 66,700.87
  4. Step 4: Simplify right side
    120,415.01x = 11,083,952,040.35
  5. Step 5: Solve for x
    x = 11,083,952,040.35/120,415.01
  6. Step 6: Final answer
    x = 92,047.93

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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.