Home / 120,402.78-166,165.18-66,692.79

Finding the Fourth Proportional to 120,402.78, 166,165.18 and 66,692.79

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Solution

The fourth proportional to 120,402.78, 166,165.18 and 66,692.79 is: 92,041.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,402.78 : 166,165.18 = 66,692.79 : x
  2. Step 2: Convert to fraction form
    120,402.78/166,165.18 = 66,692.79/x
  3. Step 3: Cross multiply
    120,402.78x = 166,165.18 × 66,692.79
  4. Step 4: Simplify right side
    120,402.78x = 11,082,020,224.59
  5. Step 5: Solve for x
    x = 11,082,020,224.59/120,402.78
  6. Step 6: Final answer
    x = 92,041.23

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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.