Home / 120,738.00-166,615.37-66,289.90

Finding the Fourth Proportional to 120,738.00, 166,615.37 and 66,289.90

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Solution

The fourth proportional to 120,738.00, 166,615.37 and 66,289.90 is: 91,478.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,738.00 : 166,615.37 = 66,289.90 : x
  2. Step 2: Convert to fraction form
    120,738.00/166,615.37 = 66,289.90/x
  3. Step 3: Cross multiply
    120,738.00x = 166,615.37 × 66,289.90
  4. Step 4: Simplify right side
    120,738.00x = 11,044,915,051.24
  5. Step 5: Solve for x
    x = 11,044,915,051.24/120,738.00
  6. Step 6: Final answer
    x = 91,478.37

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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.