Home / 158,629.68-218,948.76-107,728.56

Finding the Fourth Proportional to 158,629.68, 218,948.76 and 107,728.56

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Solution

The fourth proportional to 158,629.68, 218,948.76 and 107,728.56 is: 148,692.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,629.68 : 218,948.76 = 107,728.56 : x
  2. Step 2: Convert to fraction form
    158,629.68/218,948.76 = 107,728.56/x
  3. Step 3: Cross multiply
    158,629.68x = 218,948.76 × 107,728.56
  4. Step 4: Simplify right side
    158,629.68x = 23,587,034,628.59
  5. Step 5: Solve for x
    x = 23,587,034,628.59/158,629.68
  6. Step 6: Final answer
    x = 148,692.44

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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.