Home / 120,326.21-166,091.92-74,420.98

Finding the Fourth Proportional to 120,326.21, 166,091.92 and 74,420.98

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Solution

The fourth proportional to 120,326.21, 166,091.92 and 74,420.98 is: 102,726.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,326.21 : 166,091.92 = 74,420.98 : x
  2. Step 2: Convert to fraction form
    120,326.21/166,091.92 = 74,420.98/x
  3. Step 3: Cross multiply
    120,326.21x = 166,091.92 × 74,420.98
  4. Step 4: Simplify right side
    120,326.21x = 12,360,722,855.20
  5. Step 5: Solve for x
    x = 12,360,722,855.20/120,326.21
  6. Step 6: Final answer
    x = 102,726.77

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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.