Home / 134,629.84-185,789.19-78,074.02

Finding the Fourth Proportional to 134,629.84, 185,789.19 and 78,074.02

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Solution

The fourth proportional to 134,629.84, 185,789.19 and 78,074.02 is: 107,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,629.84 : 185,789.19 = 78,074.02 : x
  2. Step 2: Convert to fraction form
    134,629.84/185,789.19 = 78,074.02/x
  3. Step 3: Cross multiply
    134,629.84x = 185,789.19 × 78,074.02
  4. Step 4: Simplify right side
    134,629.84x = 14,505,308,935.84
  5. Step 5: Solve for x
    x = 14,505,308,935.84/134,629.84
  6. Step 6: Final answer
    x = 107,742.15

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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.