Home / 105,690.30-145,775.34-67,476.12

Finding the Fourth Proportional to 105,690.30, 145,775.34 and 67,476.12

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Solution

The fourth proportional to 105,690.30, 145,775.34 and 67,476.12 is: 93,067.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,690.30 : 145,775.34 = 67,476.12 : x
  2. Step 2: Convert to fraction form
    105,690.30/145,775.34 = 67,476.12/x
  3. Step 3: Cross multiply
    105,690.30x = 145,775.34 × 67,476.12
  4. Step 4: Simplify right side
    105,690.30x = 9,836,354,334.88
  5. Step 5: Solve for x
    x = 9,836,354,334.88/105,690.30
  6. Step 6: Final answer
    x = 93,067.71

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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.