Home / 120,584.64-166,484.88-77,583.36

Finding the Fourth Proportional to 120,584.64, 166,484.88 and 77,583.36

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Solution

The fourth proportional to 120,584.64, 166,484.88 and 77,583.36 is: 107,115.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,584.64 : 166,484.88 = 77,583.36 : x
  2. Step 2: Convert to fraction form
    120,584.64/166,484.88 = 77,583.36/x
  3. Step 3: Cross multiply
    120,584.64x = 166,484.88 × 77,583.36
  4. Step 4: Simplify right side
    120,584.64x = 12,916,456,379.60
  5. Step 5: Solve for x
    x = 12,916,456,379.60/120,584.64
  6. Step 6: Final answer
    x = 107,115.27

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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.