Home / 156,782.42-216,360.15-85,161.86

Finding the Fourth Proportional to 156,782.42, 216,360.15 and 85,161.86

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Solution

The fourth proportional to 156,782.42, 216,360.15 and 85,161.86 is: 117,523.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,782.42 : 216,360.15 = 85,161.86 : x
  2. Step 2: Convert to fraction form
    156,782.42/216,360.15 = 85,161.86/x
  3. Step 3: Cross multiply
    156,782.42x = 216,360.15 × 85,161.86
  4. Step 4: Simplify right side
    156,782.42x = 18,425,632,803.88
  5. Step 5: Solve for x
    x = 18,425,632,803.88/156,782.42
  6. Step 6: Final answer
    x = 117,523.59

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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.