Home / 105,169.84-145,136.40-57,425.08

Finding the Fourth Proportional to 105,169.84, 145,136.40 and 57,425.08

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Solution

The fourth proportional to 105,169.84, 145,136.40 and 57,425.08 is: 79,247.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,169.84 : 145,136.40 = 57,425.08 : x
  2. Step 2: Convert to fraction form
    105,169.84/145,136.40 = 57,425.08/x
  3. Step 3: Cross multiply
    105,169.84x = 145,136.40 × 57,425.08
  4. Step 4: Simplify right side
    105,169.84x = 8,334,469,380.91
  5. Step 5: Solve for x
    x = 8,334,469,380.91/105,169.84
  6. Step 6: Final answer
    x = 79,247.71

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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.