Home / 105,194.96-145,169.57-57,448.31

Finding the Fourth Proportional to 105,194.96, 145,169.57 and 57,448.31

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Solution

The fourth proportional to 105,194.96, 145,169.57 and 57,448.31 is: 79,278.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,194.96 : 145,169.57 = 57,448.31 : x
  2. Step 2: Convert to fraction form
    105,194.96/145,169.57 = 57,448.31/x
  3. Step 3: Cross multiply
    105,194.96x = 145,169.57 × 57,448.31
  4. Step 4: Simplify right side
    105,194.96x = 8,339,745,734.08
  5. Step 5: Solve for x
    x = 8,339,745,734.08/105,194.96
  6. Step 6: Final answer
    x = 79,278.95

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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.