Home / 189,028.32-260,858.30-102,987.06

Finding the Fourth Proportional to 189,028.32, 260,858.30 and 102,987.06

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Solution

The fourth proportional to 189,028.32, 260,858.30 and 102,987.06 is: 142,121.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,028.32 : 260,858.30 = 102,987.06 : x
  2. Step 2: Convert to fraction form
    189,028.32/260,858.30 = 102,987.06/x
  3. Step 3: Cross multiply
    189,028.32x = 260,858.30 × 102,987.06
  4. Step 4: Simplify right side
    189,028.32x = 26,865,028,878.66
  5. Step 5: Solve for x
    x = 26,865,028,878.66/189,028.32
  6. Step 6: Final answer
    x = 142,121.71

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1.5x scale

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.