Home / 149,196.42-205,893.68-81,215.35

Finding the Fourth Proportional to 149,196.42, 205,893.68 and 81,215.35

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Solution

The fourth proportional to 149,196.42, 205,893.68 and 81,215.35 is: 112,078.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,196.42 : 205,893.68 = 81,215.35 : x
  2. Step 2: Convert to fraction form
    149,196.42/205,893.68 = 81,215.35/x
  3. Step 3: Cross multiply
    149,196.42x = 205,893.68 × 81,215.35
  4. Step 4: Simplify right side
    149,196.42x = 16,721,727,487.03
  5. Step 5: Solve for x
    x = 16,721,727,487.03/149,196.42
  6. Step 6: Final answer
    x = 112,078.61

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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.