Home / 191,205.09-263,869.46-105,170.71

Finding the Fourth Proportional to 191,205.09, 263,869.46 and 105,170.71

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Solution

The fourth proportional to 191,205.09, 263,869.46 and 105,170.71 is: 145,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,205.09 : 263,869.46 = 105,170.71 : x
  2. Step 2: Convert to fraction form
    191,205.09/263,869.46 = 105,170.71/x
  3. Step 3: Cross multiply
    191,205.09x = 263,869.46 × 105,170.71
  4. Step 4: Simplify right side
    191,205.09x = 27,751,338,455.52
  5. Step 5: Solve for x
    x = 27,751,338,455.52/191,205.09
  6. Step 6: Final answer
    x = 145,139.12

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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.