Home / 156,639.82-216,163.14-85,019.86

Finding the Fourth Proportional to 156,639.82, 216,163.14 and 85,019.86

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Solution

The fourth proportional to 156,639.82, 216,163.14 and 85,019.86 is: 117,327.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.82 : 216,163.14 = 85,019.86 : x
  2. Step 2: Convert to fraction form
    156,639.82/216,163.14 = 85,019.86/x
  3. Step 3: Cross multiply
    156,639.82x = 216,163.14 × 85,019.86
  4. Step 4: Simplify right side
    156,639.82x = 18,378,159,899.96
  5. Step 5: Solve for x
    x = 18,378,159,899.96/156,639.82
  6. Step 6: Final answer
    x = 117,327.51

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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.