Home / 141,918.48-195,833.16-78,254.64

Finding the Fourth Proportional to 141,918.48, 195,833.16 and 78,254.64

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Solution

The fourth proportional to 141,918.48, 195,833.16 and 78,254.64 is: 107,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,918.48 : 195,833.16 = 78,254.64 : x
  2. Step 2: Convert to fraction form
    141,918.48/195,833.16 = 78,254.64/x
  3. Step 3: Cross multiply
    141,918.48x = 195,833.16 × 78,254.64
  4. Step 4: Simplify right side
    141,918.48x = 15,324,853,435.86
  5. Step 5: Solve for x
    x = 15,324,853,435.86/141,918.48
  6. Step 6: Final answer
    x = 107,983.49

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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.