Home / 86,615.06-119,611.32-81,897.82

Finding the Fourth Proportional to 86,615.06, 119,611.32 and 81,897.82

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Solution

The fourth proportional to 86,615.06, 119,611.32 and 81,897.82 is: 113,097.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,615.06 : 119,611.32 = 81,897.82 : x
  2. Step 2: Convert to fraction form
    86,615.06/119,611.32 = 81,897.82/x
  3. Step 3: Cross multiply
    86,615.06x = 119,611.32 × 81,897.82
  4. Step 4: Simplify right side
    86,615.06x = 9,795,905,749.18
  5. Step 5: Solve for x
    x = 9,795,905,749.18/86,615.06
  6. Step 6: Final answer
    x = 113,097.03

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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.