Home / 211,185.20-291,390.20-125,171.09

Finding the Fourth Proportional to 211,185.20, 291,390.20 and 125,171.09

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Solution

The fourth proportional to 211,185.20, 291,390.20 and 125,171.09 is: 172,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,185.20 : 291,390.20 = 125,171.09 : x
  2. Step 2: Convert to fraction form
    211,185.20/291,390.20 = 125,171.09/x
  3. Step 3: Cross multiply
    211,185.20x = 291,390.20 × 125,171.09
  4. Step 4: Simplify right side
    211,185.20x = 36,473,626,866.51
  5. Step 5: Solve for x
    x = 36,473,626,866.51/211,185.20
  6. Step 6: Final answer
    x = 172,709.20

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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.