Home / 105,905.75-146,182.74-68,180

Finding the Fourth Proportional to 105,905.75, 146,182.74 and 68,180

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Solution

The fourth proportional to 105,905.75, 146,182.74 and 68,180 is: 94,109.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,905.75 : 146,182.74 = 68,180 : x
  2. Step 2: Convert to fraction form
    105,905.75/146,182.74 = 68,180/x
  3. Step 3: Cross multiply
    105,905.75x = 146,182.74 × 68,180
  4. Step 4: Simplify right side
    105,905.75x = 9,966,739,213.20
  5. Step 5: Solve for x
    x = 9,966,739,213.20/105,905.75
  6. Step 6: Final answer
    x = 94,109.52

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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.