Home / 117,775.80-162,515.82-79,618.35

Finding the Fourth Proportional to 117,775.80, 162,515.82 and 79,618.35

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Solution

The fourth proportional to 117,775.80, 162,515.82 and 79,618.35 is: 109,863.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,775.80 : 162,515.82 = 79,618.35 : x
  2. Step 2: Convert to fraction form
    117,775.80/162,515.82 = 79,618.35/x
  3. Step 3: Cross multiply
    117,775.80x = 162,515.82 × 79,618.35
  4. Step 4: Simplify right side
    117,775.80x = 12,939,241,437.30
  5. Step 5: Solve for x
    x = 12,939,241,437.30/117,775.80
  6. Step 6: Final answer
    x = 109,863.33

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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.