Home / 149,977.12-206,962.08-81,992.48

Finding the Fourth Proportional to 149,977.12, 206,962.08 and 81,992.48

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Solution

The fourth proportional to 149,977.12, 206,962.08 and 81,992.48 is: 113,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,977.12 : 206,962.08 = 81,992.48 : x
  2. Step 2: Convert to fraction form
    149,977.12/206,962.08 = 81,992.48/x
  3. Step 3: Cross multiply
    149,977.12x = 206,962.08 × 81,992.48
  4. Step 4: Simplify right side
    149,977.12x = 16,969,334,205.16
  5. Step 5: Solve for x
    x = 16,969,334,205.16/149,977.12
  6. Step 6: Final answer
    x = 113,146.15

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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.