Home / 236,531.31-326,374.73-139,721.78

Finding the Fourth Proportional to 236,531.31, 326,374.73 and 139,721.78

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Solution

The fourth proportional to 236,531.31, 326,374.73 and 139,721.78 is: 192,793.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,531.31 : 326,374.73 = 139,721.78 : x
  2. Step 2: Convert to fraction form
    236,531.31/326,374.73 = 139,721.78/x
  3. Step 3: Cross multiply
    236,531.31x = 326,374.73 × 139,721.78
  4. Step 4: Simplify right side
    236,531.31x = 45,601,658,747.92
  5. Step 5: Solve for x
    x = 45,601,658,747.92/236,531.31
  6. Step 6: Final answer
    x = 192,793.33

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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.