Home / 156,622.89-216,137.79-85,002.96

Finding the Fourth Proportional to 156,622.89, 216,137.79 and 85,002.96

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Solution

The fourth proportional to 156,622.89, 216,137.79 and 85,002.96 is: 117,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,622.89 : 216,137.79 = 85,002.96 : x
  2. Step 2: Convert to fraction form
    156,622.89/216,137.79 = 85,002.96/x
  3. Step 3: Cross multiply
    156,622.89x = 216,137.79 × 85,002.96
  4. Step 4: Simplify right side
    156,622.89x = 18,372,351,917.86
  5. Step 5: Solve for x
    x = 18,372,351,917.86/156,622.89
  6. Step 6: Final answer
    x = 117,303.11

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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.