Home / 111,399.40-167,156.54-73,985.36

Finding the Fourth Proportional to 111,399.40, 167,156.54 and 73,985.36

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Solution

The fourth proportional to 111,399.40, 167,156.54 and 73,985.36 is: 111,016.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,399.40 : 167,156.54 = 73,985.36 : x
  2. Step 2: Convert to fraction form
    111,399.40/167,156.54 = 73,985.36/x
  3. Step 3: Cross multiply
    111,399.40x = 167,156.54 × 73,985.36
  4. Step 4: Simplify right side
    111,399.40x = 12,367,136,418.33
  5. Step 5: Solve for x
    x = 12,367,136,418.33/111,399.40
  6. Step 6: Final answer
    x = 111,016.19

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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.