Home / 156,638.96-216,163.36-85,019.60

Finding the Fourth Proportional to 156,638.96, 216,163.36 and 85,019.60

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Solution

The fourth proportional to 156,638.96, 216,163.36 and 85,019.60 is: 117,327.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,638.96 : 216,163.36 = 85,019.60 : x
  2. Step 2: Convert to fraction form
    156,638.96/216,163.36 = 85,019.60/x
  3. Step 3: Cross multiply
    156,638.96x = 216,163.36 × 85,019.60
  4. Step 4: Simplify right side
    156,638.96x = 18,378,122,401.86
  5. Step 5: Solve for x
    x = 18,378,122,401.86/156,638.96
  6. Step 6: Final answer
    x = 117,327.91

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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.