Home / 198,986.76-274,587.86-112,947.50

Finding the Fourth Proportional to 198,986.76, 274,587.86 and 112,947.50

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Solution

The fourth proportional to 198,986.76, 274,587.86 and 112,947.50 is: 155,859.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,986.76 : 274,587.86 = 112,947.50 : x
  2. Step 2: Convert to fraction form
    198,986.76/274,587.86 = 112,947.50/x
  3. Step 3: Cross multiply
    198,986.76x = 274,587.86 × 112,947.50
  4. Step 4: Simplify right side
    198,986.76x = 31,014,011,106.30
  5. Step 5: Solve for x
    x = 31,014,011,106.30/198,986.76
  6. Step 6: Final answer
    x = 155,859.67

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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.