Home / 105,939.36-146,204.16-65,661.04

Finding the Fourth Proportional to 105,939.36, 146,204.16 and 65,661.04

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Solution

The fourth proportional to 105,939.36, 146,204.16 and 65,661.04 is: 90,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,939.36 : 146,204.16 = 65,661.04 : x
  2. Step 2: Convert to fraction form
    105,939.36/146,204.16 = 65,661.04/x
  3. Step 3: Cross multiply
    105,939.36x = 146,204.16 × 65,661.04
  4. Step 4: Simplify right side
    105,939.36x = 9,599,917,197.93
  5. Step 5: Solve for x
    x = 9,599,917,197.93/105,939.36
  6. Step 6: Final answer
    x = 90,617.10

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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.