Home / 211,747.36-292,216-121,111.68

Finding the Fourth Proportional to 211,747.36, 292,216 and 121,111.68

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Solution

The fourth proportional to 211,747.36, 292,216 and 121,111.68 is: 167,136.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,747.36 : 292,216 = 121,111.68 : x
  2. Step 2: Convert to fraction form
    211,747.36/292,216 = 121,111.68/x
  3. Step 3: Cross multiply
    211,747.36x = 292,216 × 121,111.68
  4. Step 4: Simplify right side
    211,747.36x = 35,390,770,682.88
  5. Step 5: Solve for x
    x = 35,390,770,682.88/211,747.36
  6. Step 6: Final answer
    x = 167,136.77

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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.