Home / 211,022.30-291,218.64-120,393.02

Finding the Fourth Proportional to 211,022.30, 291,218.64 and 120,393.02

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Solution

The fourth proportional to 211,022.30, 291,218.64 and 120,393.02 is: 166,146.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,022.30 : 291,218.64 = 120,393.02 : x
  2. Step 2: Convert to fraction form
    211,022.30/291,218.64 = 120,393.02/x
  3. Step 3: Cross multiply
    211,022.30x = 291,218.64 × 120,393.02
  4. Step 4: Simplify right side
    211,022.30x = 35,060,691,549.89
  5. Step 5: Solve for x
    x = 35,060,691,549.89/211,022.30
  6. Step 6: Final answer
    x = 166,146.86

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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.