Home / 105,679.88-145,839.39-57,932.18

Finding the Fourth Proportional to 105,679.88, 145,839.39 and 57,932.18

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Solution

The fourth proportional to 105,679.88, 145,839.39 and 57,932.18 is: 79,947.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,679.88 : 145,839.39 = 57,932.18 : x
  2. Step 2: Convert to fraction form
    105,679.88/145,839.39 = 57,932.18/x
  3. Step 3: Cross multiply
    105,679.88x = 145,839.39 × 57,932.18
  4. Step 4: Simplify right side
    105,679.88x = 8,448,793,792.57
  5. Step 5: Solve for x
    x = 8,448,793,792.57/105,679.88
  6. Step 6: Final answer
    x = 79,947.04

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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.