Home / 211,521.31-291,734.43-130,993.54

Finding the Fourth Proportional to 211,521.31, 291,734.43 and 130,993.54

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Solution

The fourth proportional to 211,521.31, 291,734.43 and 130,993.54 is: 180,668.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,521.31 : 291,734.43 = 130,993.54 : x
  2. Step 2: Convert to fraction form
    211,521.31/291,734.43 = 130,993.54/x
  3. Step 3: Cross multiply
    211,521.31x = 291,734.43 × 130,993.54
  4. Step 4: Simplify right side
    211,521.31x = 38,215,325,725.58
  5. Step 5: Solve for x
    x = 38,215,325,725.58/211,521.31
  6. Step 6: Final answer
    x = 180,668.92

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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.