Home / 188,051.28-259,447.64-107,421.72

Finding the Fourth Proportional to 188,051.28, 259,447.64 and 107,421.72

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Solution

The fourth proportional to 188,051.28, 259,447.64 and 107,421.72 is: 148,205.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,051.28 : 259,447.64 = 107,421.72 : x
  2. Step 2: Convert to fraction form
    188,051.28/259,447.64 = 107,421.72/x
  3. Step 3: Cross multiply
    188,051.28x = 259,447.64 × 107,421.72
  4. Step 4: Simplify right side
    188,051.28x = 27,870,311,738.74
  5. Step 5: Solve for x
    x = 27,870,311,738.74/188,051.28
  6. Step 6: Final answer
    x = 148,205.91

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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.