Home / 105,194.82-145,169.38-57,448.16

Finding the Fourth Proportional to 105,194.82, 145,169.38 and 57,448.16

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Solution

The fourth proportional to 105,194.82, 145,169.38 and 57,448.16 is: 79,278.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,194.82 : 145,169.38 = 57,448.16 : x
  2. Step 2: Convert to fraction form
    105,194.82/145,169.38 = 57,448.16/x
  3. Step 3: Cross multiply
    105,194.82x = 145,169.38 × 57,448.16
  4. Step 4: Simplify right side
    105,194.82x = 8,339,713,988.64
  5. Step 5: Solve for x
    x = 8,339,713,988.64/105,194.82
  6. Step 6: Final answer
    x = 79,278.75

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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.