Home / 211,162.58-291,410.27-128,376.43

Finding the Fourth Proportional to 211,162.58, 291,410.27 and 128,376.43

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Solution

The fourth proportional to 211,162.58, 291,410.27 and 128,376.43 is: 177,163.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,162.58 : 291,410.27 = 128,376.43 : x
  2. Step 2: Convert to fraction form
    211,162.58/291,410.27 = 128,376.43/x
  3. Step 3: Cross multiply
    211,162.58x = 291,410.27 × 128,376.43
  4. Step 4: Simplify right side
    211,162.58x = 37,410,210,127.94
  5. Step 5: Solve for x
    x = 37,410,210,127.94/211,162.58
  6. Step 6: Final answer
    x = 177,163.07

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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.