Home / 111,552.45-167,329.02-78,420.75

Finding the Fourth Proportional to 111,552.45, 167,329.02 and 78,420.75

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Solution

The fourth proportional to 111,552.45, 167,329.02 and 78,420.75 is: 117,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,552.45 : 167,329.02 = 78,420.75 : x
  2. Step 2: Convert to fraction form
    111,552.45/167,329.02 = 78,420.75/x
  3. Step 3: Cross multiply
    111,552.45x = 167,329.02 × 78,420.75
  4. Step 4: Simplify right side
    111,552.45x = 13,122,067,245.17
  5. Step 5: Solve for x
    x = 13,122,067,245.17/111,552.45
  6. Step 6: Final answer
    x = 117,631.37

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1.5x scale

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.