Home / 105,619.20-145,754.28-57,874.08

Finding the Fourth Proportional to 105,619.20, 145,754.28 and 57,874.08

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Solution

The fourth proportional to 105,619.20, 145,754.28 and 57,874.08 is: 79,866.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,619.20 : 145,754.28 = 57,874.08 : x
  2. Step 2: Convert to fraction form
    105,619.20/145,754.28 = 57,874.08/x
  3. Step 3: Cross multiply
    105,619.20x = 145,754.28 × 57,874.08
  4. Step 4: Simplify right side
    105,619.20x = 8,435,394,861.06
  5. Step 5: Solve for x
    x = 8,435,394,861.06/105,619.20
  6. Step 6: Final answer
    x = 79,866.11

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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.