Home / 105,917.28-146,198.64-68,191.56

Finding the Fourth Proportional to 105,917.28, 146,198.64 and 68,191.56

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Solution

The fourth proportional to 105,917.28, 146,198.64 and 68,191.56 is: 94,125.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,917.28 : 146,198.64 = 68,191.56 : x
  2. Step 2: Convert to fraction form
    105,917.28/146,198.64 = 68,191.56/x
  3. Step 3: Cross multiply
    105,917.28x = 146,198.64 × 68,191.56
  4. Step 4: Simplify right side
    105,917.28x = 9,969,513,331.48
  5. Step 5: Solve for x
    x = 9,969,513,331.48/105,917.28
  6. Step 6: Final answer
    x = 94,125.47

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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.