Home / 191,143.73-263,818.48-121,247.81

Finding the Fourth Proportional to 191,143.73, 263,818.48 and 121,247.81

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Solution

The fourth proportional to 191,143.73, 263,818.48 and 121,247.81 is: 167,347.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,143.73 : 263,818.48 = 121,247.81 : x
  2. Step 2: Convert to fraction form
    191,143.73/263,818.48 = 121,247.81/x
  3. Step 3: Cross multiply
    191,143.73x = 263,818.48 × 121,247.81
  4. Step 4: Simplify right side
    191,143.73x = 31,987,413,788.62
  5. Step 5: Solve for x
    x = 31,987,413,788.62/191,143.73
  6. Step 6: Final answer
    x = 167,347.44

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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.