Home / 141,899.88-195,823.16-78,239.96

Finding the Fourth Proportional to 141,899.88, 195,823.16 and 78,239.96

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Solution

The fourth proportional to 141,899.88, 195,823.16 and 78,239.96 is: 107,971.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,899.88 : 195,823.16 = 78,239.96 : x
  2. Step 2: Convert to fraction form
    141,899.88/195,823.16 = 78,239.96/x
  3. Step 3: Cross multiply
    141,899.88x = 195,823.16 × 78,239.96
  4. Step 4: Simplify right side
    141,899.88x = 15,321,196,205.47
  5. Step 5: Solve for x
    x = 15,321,196,205.47/141,899.88
  6. Step 6: Final answer
    x = 107,971.88

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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.