Home / 191,139.37-263,772.51-105,099.79

Finding the Fourth Proportional to 191,139.37, 263,772.51 and 105,099.79

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Solution

The fourth proportional to 191,139.37, 263,772.51 and 105,099.79 is: 145,037.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,139.37 : 263,772.51 = 105,099.79 : x
  2. Step 2: Convert to fraction form
    191,139.37/263,772.51 = 105,099.79/x
  3. Step 3: Cross multiply
    191,139.37x = 263,772.51 × 105,099.79
  4. Step 4: Simplify right side
    191,139.37x = 27,722,435,408.77
  5. Step 5: Solve for x
    x = 27,722,435,408.77/191,139.37
  6. Step 6: Final answer
    x = 145,037.81

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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.