Home / 198,740.43-274,271.40-113,857.70

Finding the Fourth Proportional to 198,740.43, 274,271.40 and 113,857.70

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Solution

The fourth proportional to 198,740.43, 274,271.40 and 113,857.70 is: 157,129.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,740.43 : 274,271.40 = 113,857.70 : x
  2. Step 2: Convert to fraction form
    198,740.43/274,271.40 = 113,857.70/x
  3. Step 3: Cross multiply
    198,740.43x = 274,271.40 × 113,857.70
  4. Step 4: Simplify right side
    198,740.43x = 31,227,909,408.42
  5. Step 5: Solve for x
    x = 31,227,909,408.42/198,740.43
  6. Step 6: Final answer
    x = 157,129.12

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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.