Home / 149,415.83-206,187.83-81,431.35

Finding the Fourth Proportional to 149,415.83, 206,187.83 and 81,431.35

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Solution

The fourth proportional to 149,415.83, 206,187.83 and 81,431.35 is: 112,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,415.83 : 206,187.83 = 81,431.35 : x
  2. Step 2: Convert to fraction form
    149,415.83/206,187.83 = 81,431.35/x
  3. Step 3: Cross multiply
    149,415.83x = 206,187.83 × 81,431.35
  4. Step 4: Simplify right side
    149,415.83x = 16,790,152,733.21
  5. Step 5: Solve for x
    x = 16,790,152,733.21/149,415.83
  6. Step 6: Final answer
    x = 112,371.98

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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.