Home / 155,185.12-213,967.60-120,739.87

Finding the Fourth Proportional to 155,185.12, 213,967.60 and 120,739.87

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Solution

The fourth proportional to 155,185.12, 213,967.60 and 120,739.87 is: 166,474.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,185.12 : 213,967.60 = 120,739.87 : x
  2. Step 2: Convert to fraction form
    155,185.12/213,967.60 = 120,739.87/x
  3. Step 3: Cross multiply
    155,185.12x = 213,967.60 × 120,739.87
  4. Step 4: Simplify right side
    155,185.12x = 25,834,420,208.21
  5. Step 5: Solve for x
    x = 25,834,420,208.21/155,185.12
  6. Step 6: Final answer
    x = 166,474.85

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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.