Home / 120,670.40-181,005.60-73,431.20

Finding the Fourth Proportional to 120,670.40, 181,005.60 and 73,431.20

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Solution

The fourth proportional to 120,670.40, 181,005.60 and 73,431.20 is: 110,146.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,670.40 : 181,005.60 = 73,431.20 : x
  2. Step 2: Convert to fraction form
    120,670.40/181,005.60 = 73,431.20/x
  3. Step 3: Cross multiply
    120,670.40x = 181,005.60 × 73,431.20
  4. Step 4: Simplify right side
    120,670.40x = 13,291,458,414.72
  5. Step 5: Solve for x
    x = 13,291,458,414.72/120,670.40
  6. Step 6: Final answer
    x = 110,146.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.