Home / 156,961.76-216,606.94-85,341.61

Finding the Fourth Proportional to 156,961.76, 216,606.94 and 85,341.61

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Solution

The fourth proportional to 156,961.76, 216,606.94 and 85,341.61 is: 117,771.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,961.76 : 216,606.94 = 85,341.61 : x
  2. Step 2: Convert to fraction form
    156,961.76/216,606.94 = 85,341.61/x
  3. Step 3: Cross multiply
    156,961.76x = 216,606.94 × 85,341.61
  4. Step 4: Simplify right side
    156,961.76x = 18,485,584,996.77
  5. Step 5: Solve for x
    x = 18,485,584,996.77/156,961.76
  6. Step 6: Final answer
    x = 117,771.26

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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.