Home / 156,640.96-216,166.12-85,021.60

Finding the Fourth Proportional to 156,640.96, 216,166.12 and 85,021.60

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Solution

The fourth proportional to 156,640.96, 216,166.12 and 85,021.60 is: 117,330.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,640.96 : 216,166.12 = 85,021.60 : x
  2. Step 2: Convert to fraction form
    156,640.96/216,166.12 = 85,021.60/x
  3. Step 3: Cross multiply
    156,640.96x = 216,166.12 × 85,021.60
  4. Step 4: Simplify right side
    156,640.96x = 18,378,789,388.19
  5. Step 5: Solve for x
    x = 18,378,789,388.19/156,640.96
  6. Step 6: Final answer
    x = 117,330.67

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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.