Home / 156,912.86-216,543.98-85,297.75

Finding the Fourth Proportional to 156,912.86, 216,543.98 and 85,297.75

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Solution

The fourth proportional to 156,912.86, 216,543.98 and 85,297.75 is: 117,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,912.86 : 216,543.98 = 85,297.75 : x
  2. Step 2: Convert to fraction form
    156,912.86/216,543.98 = 85,297.75/x
  3. Step 3: Cross multiply
    156,912.86x = 216,543.98 × 85,297.75
  4. Step 4: Simplify right side
    156,912.86x = 18,470,714,270.05
  5. Step 5: Solve for x
    x = 18,470,714,270.05/156,912.86
  6. Step 6: Final answer
    x = 117,713.20

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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.