Home / 261,063.40-391,622.43-111,319.51

Finding the Fourth Proportional to 261,063.40, 391,622.43 and 111,319.51

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Solution

The fourth proportional to 261,063.40, 391,622.43 and 111,319.51 is: 166,990.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,063.40 : 391,622.43 = 111,319.51 : x
  2. Step 2: Convert to fraction form
    261,063.40/391,622.43 = 111,319.51/x
  3. Step 3: Cross multiply
    261,063.40x = 391,622.43 × 111,319.51
  4. Step 4: Simplify right side
    261,063.40x = 43,595,216,033.55
  5. Step 5: Solve for x
    x = 43,595,216,033.55/261,063.40
  6. Step 6: Final answer
    x = 166,990.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.