Home / 120,193.82-165,716.80-77,097.38

Finding the Fourth Proportional to 120,193.82, 165,716.80 and 77,097.38

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Solution

The fourth proportional to 120,193.82, 165,716.80 and 77,097.38 is: 106,297.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,193.82 : 165,716.80 = 77,097.38 : x
  2. Step 2: Convert to fraction form
    120,193.82/165,716.80 = 77,097.38/x
  3. Step 3: Cross multiply
    120,193.82x = 165,716.80 × 77,097.38
  4. Step 4: Simplify right side
    120,193.82x = 12,776,331,101.98
  5. Step 5: Solve for x
    x = 12,776,331,101.98/120,193.82
  6. Step 6: Final answer
    x = 106,297.74

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1.5x scale

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.