Home / 86,905.87-119,868.13-79,758.81

Finding the Fourth Proportional to 86,905.87, 119,868.13 and 79,758.81

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Solution

The fourth proportional to 86,905.87, 119,868.13 and 79,758.81 is: 110,010.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,905.87 : 119,868.13 = 79,758.81 : x
  2. Step 2: Convert to fraction form
    86,905.87/119,868.13 = 79,758.81/x
  3. Step 3: Cross multiply
    86,905.87x = 119,868.13 × 79,758.81
  4. Step 4: Simplify right side
    86,905.87x = 9,560,539,405.73
  5. Step 5: Solve for x
    x = 9,560,539,405.73/86,905.87
  6. Step 6: Final answer
    x = 110,010.28

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1.5x scale

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.