Home / 188,421.86-260,021.40-107,849

Finding the Fourth Proportional to 188,421.86, 260,021.40 and 107,849

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Solution

The fourth proportional to 188,421.86, 260,021.40 and 107,849 is: 148,831.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,421.86 : 260,021.40 = 107,849 : x
  2. Step 2: Convert to fraction form
    188,421.86/260,021.40 = 107,849/x
  3. Step 3: Cross multiply
    188,421.86x = 260,021.40 × 107,849
  4. Step 4: Simplify right side
    188,421.86x = 28,043,047,968.60
  5. Step 5: Solve for x
    x = 28,043,047,968.60/188,421.86
  6. Step 6: Final answer
    x = 148,831.18

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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.