Home / 199,018.35-274,178.07-138,485.07

Finding the Fourth Proportional to 199,018.35, 274,178.07 and 138,485.07

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Solution

The fourth proportional to 199,018.35, 274,178.07 and 138,485.07 is: 190,784.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,018.35 : 274,178.07 = 138,485.07 : x
  2. Step 2: Convert to fraction form
    199,018.35/274,178.07 = 138,485.07/x
  3. Step 3: Cross multiply
    199,018.35x = 274,178.07 × 138,485.07
  4. Step 4: Simplify right side
    199,018.35x = 37,969,569,216.41
  5. Step 5: Solve for x
    x = 37,969,569,216.41/199,018.35
  6. Step 6: Final answer
    x = 190,784.26

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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.