Home / 120,343.81-166,075.77-66,629.79

Finding the Fourth Proportional to 120,343.81, 166,075.77 and 66,629.79

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Solution

The fourth proportional to 120,343.81, 166,075.77 and 66,629.79 is: 91,949.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,343.81 : 166,075.77 = 66,629.79 : x
  2. Step 2: Convert to fraction form
    120,343.81/166,075.77 = 66,629.79/x
  3. Step 3: Cross multiply
    120,343.81x = 166,075.77 × 66,629.79
  4. Step 4: Simplify right side
    120,343.81x = 11,065,593,679.19
  5. Step 5: Solve for x
    x = 11,065,593,679.19/120,343.81
  6. Step 6: Final answer
    x = 91,949.84

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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.