Home / 141,779.88-195,651.62-78,117.48

Finding the Fourth Proportional to 141,779.88, 195,651.62 and 78,117.48

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Solution

The fourth proportional to 141,779.88, 195,651.62 and 78,117.48 is: 107,799.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,779.88 : 195,651.62 = 78,117.48 : x
  2. Step 2: Convert to fraction form
    141,779.88/195,651.62 = 78,117.48/x
  3. Step 3: Cross multiply
    141,779.88x = 195,651.62 × 78,117.48
  4. Step 4: Simplify right side
    141,779.88x = 15,283,811,512.32
  5. Step 5: Solve for x
    x = 15,283,811,512.32/141,779.88
  6. Step 6: Final answer
    x = 107,799.58

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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.