Home / 198,728.34-274,164.18-112,669.20

Finding the Fourth Proportional to 198,728.34, 274,164.18 and 112,669.20

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Solution

The fourth proportional to 198,728.34, 274,164.18 and 112,669.20 is: 155,437.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,728.34 : 274,164.18 = 112,669.20 : x
  2. Step 2: Convert to fraction form
    198,728.34/274,164.18 = 112,669.20/x
  3. Step 3: Cross multiply
    198,728.34x = 274,164.18 × 112,669.20
  4. Step 4: Simplify right side
    198,728.34x = 30,889,858,829.26
  5. Step 5: Solve for x
    x = 30,889,858,829.26/198,728.34
  6. Step 6: Final answer
    x = 155,437.61

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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.