Home / 211,871.88-292,310.78-121,194.81

Finding the Fourth Proportional to 211,871.88, 292,310.78 and 121,194.81

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Solution

The fourth proportional to 211,871.88, 292,310.78 and 121,194.81 is: 167,207.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,871.88 : 292,310.78 = 121,194.81 : x
  2. Step 2: Convert to fraction form
    211,871.88/292,310.78 = 121,194.81/x
  3. Step 3: Cross multiply
    211,871.88x = 292,310.78 × 121,194.81
  4. Step 4: Simplify right side
    211,871.88x = 35,426,548,837.08
  5. Step 5: Solve for x
    x = 35,426,548,837.08/211,871.88
  6. Step 6: Final answer
    x = 167,207.41

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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.