Home / 111,649.90-167,616.96-72,371.38

Finding the Fourth Proportional to 111,649.90, 167,616.96 and 72,371.38

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Solution

The fourth proportional to 111,649.90, 167,616.96 and 72,371.38 is: 108,649.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,649.90 : 167,616.96 = 72,371.38 : x
  2. Step 2: Convert to fraction form
    111,649.90/167,616.96 = 72,371.38/x
  3. Step 3: Cross multiply
    111,649.90x = 167,616.96 × 72,371.38
  4. Step 4: Simplify right side
    111,649.90x = 12,130,670,706.60
  5. Step 5: Solve for x
    x = 12,130,670,706.60/111,649.90
  6. Step 6: Final answer
    x = 108,649.19

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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.