Home / 211,992.72-292,536.19-121,349.40

Finding the Fourth Proportional to 211,992.72, 292,536.19 and 121,349.40

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Solution

The fourth proportional to 211,992.72, 292,536.19 and 121,349.40 is: 167,454.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,992.72 : 292,536.19 = 121,349.40 : x
  2. Step 2: Convert to fraction form
    211,992.72/292,536.19 = 121,349.40/x
  3. Step 3: Cross multiply
    211,992.72x = 292,536.19 × 121,349.40
  4. Step 4: Simplify right side
    211,992.72x = 35,499,091,134.79
  5. Step 5: Solve for x
    x = 35,499,091,134.79/211,992.72
  6. Step 6: Final answer
    x = 167,454.29

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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.