Home / 105,904.25-146,180.67-68,178.50

Finding the Fourth Proportional to 105,904.25, 146,180.67 and 68,178.50

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Solution

The fourth proportional to 105,904.25, 146,180.67 and 68,178.50 is: 94,107.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,904.25 : 146,180.67 = 68,178.50 : x
  2. Step 2: Convert to fraction form
    105,904.25/146,180.67 = 68,178.50/x
  3. Step 3: Cross multiply
    105,904.25x = 146,180.67 × 68,178.50
  4. Step 4: Simplify right side
    105,904.25x = 9,966,378,809.60
  5. Step 5: Solve for x
    x = 9,966,378,809.60/105,904.25
  6. Step 6: Final answer
    x = 94,107.45

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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.