Home / 141,781.21-195,650.91-78,117.64

Finding the Fourth Proportional to 141,781.21, 195,650.91 and 78,117.64

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Solution

The fourth proportional to 141,781.21, 195,650.91 and 78,117.64 is: 107,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,781.21 : 195,650.91 = 78,117.64 : x
  2. Step 2: Convert to fraction form
    141,781.21/195,650.91 = 78,117.64/x
  3. Step 3: Cross multiply
    141,781.21x = 195,650.91 × 78,117.64
  4. Step 4: Simplify right side
    141,781.21x = 15,283,786,863.93
  5. Step 5: Solve for x
    x = 15,283,786,863.93/141,781.21
  6. Step 6: Final answer
    x = 107,798.40

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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.