Home / 105,481.20-145,563.80-57,734.13

Finding the Fourth Proportional to 105,481.20, 145,563.80 and 57,734.13

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Solution

The fourth proportional to 105,481.20, 145,563.80 and 57,734.13 is: 79,672.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,481.20 : 145,563.80 = 57,734.13 : x
  2. Step 2: Convert to fraction form
    105,481.20/145,563.80 = 57,734.13/x
  3. Step 3: Cross multiply
    105,481.20x = 145,563.80 × 57,734.13
  4. Step 4: Simplify right side
    105,481.20x = 8,403,998,624.68
  5. Step 5: Solve for x
    x = 8,403,998,624.68/105,481.20
  6. Step 6: Final answer
    x = 79,672.96

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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.