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Finding the Fourth Proportional to 120,716.88, 181,075.35 and 45,837.09

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Solution

The fourth proportional to 120,716.88, 181,075.35 and 45,837.09 is: 68,755.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,716.88 : 181,075.35 = 45,837.09 : x
  2. Step 2: Convert to fraction form
    120,716.88/181,075.35 = 45,837.09/x
  3. Step 3: Cross multiply
    120,716.88x = 181,075.35 × 45,837.09
  4. Step 4: Simplify right side
    120,716.88x = 8,299,967,028.79
  5. Step 5: Solve for x
    x = 8,299,967,028.79/120,716.88
  6. Step 6: Final answer
    x = 68,755.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.