Home / 156,939.86-216,581.28-85,324.82

Finding the Fourth Proportional to 156,939.86, 216,581.28 and 85,324.82

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Solution

The fourth proportional to 156,939.86, 216,581.28 and 85,324.82 is: 117,750.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.86 : 216,581.28 = 85,324.82 : x
  2. Step 2: Convert to fraction form
    156,939.86/216,581.28 = 85,324.82/x
  3. Step 3: Cross multiply
    156,939.86x = 216,581.28 × 85,324.82
  4. Step 4: Simplify right side
    156,939.86x = 18,479,758,731.37
  5. Step 5: Solve for x
    x = 18,479,758,731.37/156,939.86
  6. Step 6: Final answer
    x = 117,750.57

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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.