Home / 156,942.92-216,571.98-85,322.31

Finding the Fourth Proportional to 156,942.92, 216,571.98 and 85,322.31

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Solution

The fourth proportional to 156,942.92, 216,571.98 and 85,322.31 is: 117,739.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,942.92 : 216,571.98 = 85,322.31 : x
  2. Step 2: Convert to fraction form
    156,942.92/216,571.98 = 85,322.31/x
  3. Step 3: Cross multiply
    156,942.92x = 216,571.98 × 85,322.31
  4. Step 4: Simplify right side
    156,942.92x = 18,478,421,860.97
  5. Step 5: Solve for x
    x = 18,478,421,860.97/156,942.92
  6. Step 6: Final answer
    x = 117,739.76

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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.