Home / 120,960.19-166,928.69-66,509.54

Finding the Fourth Proportional to 120,960.19, 166,928.69 and 66,509.54

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Solution

The fourth proportional to 120,960.19, 166,928.69 and 66,509.54 is: 91,785.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,960.19 : 166,928.69 = 66,509.54 : x
  2. Step 2: Convert to fraction form
    120,960.19/166,928.69 = 66,509.54/x
  3. Step 3: Cross multiply
    120,960.19x = 166,928.69 × 66,509.54
  4. Step 4: Simplify right side
    120,960.19x = 11,102,350,968.30
  5. Step 5: Solve for x
    x = 11,102,350,968.30/120,960.19
  6. Step 6: Final answer
    x = 91,785.16

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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.