Home / 188,742.35-283,112.91-76,421.68

Finding the Fourth Proportional to 188,742.35, 283,112.91 and 76,421.68

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Solution

The fourth proportional to 188,742.35, 283,112.91 and 76,421.68 is: 114,632.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,742.35 : 283,112.91 = 76,421.68 : x
  2. Step 2: Convert to fraction form
    188,742.35/283,112.91 = 76,421.68/x
  3. Step 3: Cross multiply
    188,742.35x = 283,112.91 × 76,421.68
  4. Step 4: Simplify right side
    188,742.35x = 21,635,963,504.11
  5. Step 5: Solve for x
    x = 21,635,963,504.11/188,742.35
  6. Step 6: Final answer
    x = 114,632.27

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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.