Home / 156,786.58-216,231.42-105,790.60

Finding the Fourth Proportional to 156,786.58, 216,231.42 and 105,790.60

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Solution

The fourth proportional to 156,786.58, 216,231.42 and 105,790.60 is: 145,900.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,786.58 : 216,231.42 = 105,790.60 : x
  2. Step 2: Convert to fraction form
    156,786.58/216,231.42 = 105,790.60/x
  3. Step 3: Cross multiply
    156,786.58x = 216,231.42 × 105,790.60
  4. Step 4: Simplify right side
    156,786.58x = 22,875,251,660.65
  5. Step 5: Solve for x
    x = 22,875,251,660.65/156,786.58
  6. Step 6: Final answer
    x = 145,900.57

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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.