Home / 111,918.54-167,701.92-78,151.26

Finding the Fourth Proportional to 111,918.54, 167,701.92 and 78,151.26

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Solution

The fourth proportional to 111,918.54, 167,701.92 and 78,151.26 is: 117,104.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,918.54 : 167,701.92 = 78,151.26 : x
  2. Step 2: Convert to fraction form
    111,918.54/167,701.92 = 78,151.26/x
  3. Step 3: Cross multiply
    111,918.54x = 167,701.92 × 78,151.26
  4. Step 4: Simplify right side
    111,918.54x = 13,106,116,352.42
  5. Step 5: Solve for x
    x = 13,106,116,352.42/111,918.54
  6. Step 6: Final answer
    x = 117,104.07

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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.