Home / 211,145.13-291,380.37-115,653.42

Finding the Fourth Proportional to 211,145.13, 291,380.37 and 115,653.42

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Solution

The fourth proportional to 211,145.13, 291,380.37 and 115,653.42 is: 159,601.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,145.13 : 291,380.37 = 115,653.42 : x
  2. Step 2: Convert to fraction form
    211,145.13/291,380.37 = 115,653.42/x
  3. Step 3: Cross multiply
    211,145.13x = 291,380.37 × 115,653.42
  4. Step 4: Simplify right side
    211,145.13x = 33,699,136,311.37
  5. Step 5: Solve for x
    x = 33,699,136,311.37/211,145.13
  6. Step 6: Final answer
    x = 159,601.77

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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.