Home / 156,639.93-216,163.32-85,019.96

Finding the Fourth Proportional to 156,639.93, 216,163.32 and 85,019.96

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Solution

The fourth proportional to 156,639.93, 216,163.32 and 85,019.96 is: 117,327.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,639.93 : 216,163.32 = 85,019.96 : x
  2. Step 2: Convert to fraction form
    156,639.93/216,163.32 = 85,019.96/x
  3. Step 3: Cross multiply
    156,639.93x = 216,163.32 × 85,019.96
  4. Step 4: Simplify right side
    156,639.93x = 18,378,197,041.45
  5. Step 5: Solve for x
    x = 18,378,197,041.45/156,639.93
  6. Step 6: Final answer
    x = 117,327.67

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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.