Home / 86,905.12-119,867.16-79,758.08

Finding the Fourth Proportional to 86,905.12, 119,867.16 and 79,758.08

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Solution

The fourth proportional to 86,905.12, 119,867.16 and 79,758.08 is: 110,009.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,905.12 : 119,867.16 = 79,758.08 : x
  2. Step 2: Convert to fraction form
    86,905.12/119,867.16 = 79,758.08/x
  3. Step 3: Cross multiply
    86,905.12x = 119,867.16 × 79,758.08
  4. Step 4: Simplify right side
    86,905.12x = 9,560,374,536.65
  5. Step 5: Solve for x
    x = 9,560,374,536.65/86,905.12
  6. Step 6: Final answer
    x = 110,009.34

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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.