Home / 120,707.36-166,572.96-66,989.60

Finding the Fourth Proportional to 120,707.36, 166,572.96 and 66,989.60

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Solution

The fourth proportional to 120,707.36, 166,572.96 and 66,989.60 is: 92,443.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,707.36 : 166,572.96 = 66,989.60 : x
  2. Step 2: Convert to fraction form
    120,707.36/166,572.96 = 66,989.60/x
  3. Step 3: Cross multiply
    120,707.36x = 166,572.96 × 66,989.60
  4. Step 4: Simplify right side
    120,707.36x = 11,158,655,961.22
  5. Step 5: Solve for x
    x = 11,158,655,961.22/120,707.36
  6. Step 6: Final answer
    x = 92,443.87

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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.