Home / 141,421.08-195,161.82-77,763

Finding the Fourth Proportional to 141,421.08, 195,161.82 and 77,763

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Solution

The fourth proportional to 141,421.08, 195,161.82 and 77,763 is: 107,313.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,421.08 : 195,161.82 = 77,763 : x
  2. Step 2: Convert to fraction form
    141,421.08/195,161.82 = 77,763/x
  3. Step 3: Cross multiply
    141,421.08x = 195,161.82 × 77,763
  4. Step 4: Simplify right side
    141,421.08x = 15,176,368,608.66
  5. Step 5: Solve for x
    x = 15,176,368,608.66/141,421.08
  6. Step 6: Final answer
    x = 107,313.34

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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.