Home / 191,201.31-263,861.15-105,169.59

Finding the Fourth Proportional to 191,201.31, 263,861.15 and 105,169.59

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Solution

The fourth proportional to 191,201.31, 263,861.15 and 105,169.59 is: 145,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,201.31 : 263,861.15 = 105,169.59 : x
  2. Step 2: Convert to fraction form
    191,201.31/263,861.15 = 105,169.59/x
  3. Step 3: Cross multiply
    191,201.31x = 263,861.15 × 105,169.59
  4. Step 4: Simplify right side
    191,201.31x = 27,750,168,436.58
  5. Step 5: Solve for x
    x = 27,750,168,436.58/191,201.31
  6. Step 6: Final answer
    x = 145,135.87

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1.5x scale

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.