Home / 211,322.52-291,633.12-120,679.20

Finding the Fourth Proportional to 211,322.52, 291,633.12 and 120,679.20

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Solution

The fourth proportional to 211,322.52, 291,633.12 and 120,679.20 is: 166,541.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,322.52 : 291,633.12 = 120,679.20 : x
  2. Step 2: Convert to fraction form
    211,322.52/291,633.12 = 120,679.20/x
  3. Step 3: Cross multiply
    211,322.52x = 291,633.12 × 120,679.20
  4. Step 4: Simplify right side
    211,322.52x = 35,194,051,615.10
  5. Step 5: Solve for x
    x = 35,194,051,615.10/211,322.52
  6. Step 6: Final answer
    x = 166,541.89

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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.