Home / 120,661.40-166,520.60-69,676.28

Finding the Fourth Proportional to 120,661.40, 166,520.60 and 69,676.28

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Solution

The fourth proportional to 120,661.40, 166,520.60 and 69,676.28 is: 96,157.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,661.40 : 166,520.60 = 69,676.28 : x
  2. Step 2: Convert to fraction form
    120,661.40/166,520.60 = 69,676.28/x
  3. Step 3: Cross multiply
    120,661.40x = 166,520.60 × 69,676.28
  4. Step 4: Simplify right side
    120,661.40x = 11,602,535,951.37
  5. Step 5: Solve for x
    x = 11,602,535,951.37/120,661.40
  6. Step 6: Final answer
    x = 96,157.81

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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.