Home / 105,983.20-146,270.64-68,366.80

Finding the Fourth Proportional to 105,983.20, 146,270.64 and 68,366.80

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Solution

The fourth proportional to 105,983.20, 146,270.64 and 68,366.80 is: 94,355.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,983.20 : 146,270.64 = 68,366.80 : x
  2. Step 2: Convert to fraction form
    105,983.20/146,270.64 = 68,366.80/x
  3. Step 3: Cross multiply
    105,983.20x = 146,270.64 × 68,366.80
  4. Step 4: Simplify right side
    105,983.20x = 10,000,055,590.75
  5. Step 5: Solve for x
    x = 10,000,055,590.75/105,983.20
  6. Step 6: Final answer
    x = 94,355.10

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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.