Home / 86,615.03-119,611.28-81,897.77

Finding the Fourth Proportional to 86,615.03, 119,611.28 and 81,897.77

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Solution

The fourth proportional to 86,615.03, 119,611.28 and 81,897.77 is: 113,096.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,615.03 : 119,611.28 = 81,897.77 : x
  2. Step 2: Convert to fraction form
    86,615.03/119,611.28 = 81,897.77/x
  3. Step 3: Cross multiply
    86,615.03x = 119,611.28 × 81,897.77
  4. Step 4: Simplify right side
    86,615.03x = 9,795,897,098.85
  5. Step 5: Solve for x
    x = 9,795,897,098.85/86,615.03
  6. Step 6: Final answer
    x = 113,096.97

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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.