Home / 149,028.86-205,642.59-85,362.86

Finding the Fourth Proportional to 149,028.86, 205,642.59 and 85,362.86

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Solution

The fourth proportional to 149,028.86, 205,642.59 and 85,362.86 is: 117,790.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,028.86 : 205,642.59 = 85,362.86 : x
  2. Step 2: Convert to fraction form
    149,028.86/205,642.59 = 85,362.86/x
  3. Step 3: Cross multiply
    149,028.86x = 205,642.59 × 85,362.86
  4. Step 4: Simplify right side
    149,028.86x = 17,554,239,620.21
  5. Step 5: Solve for x
    x = 17,554,239,620.21/149,028.86
  6. Step 6: Final answer
    x = 117,790.87

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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.