Home / 149,016.66-205,638.89-81,948.66

Finding the Fourth Proportional to 149,016.66, 205,638.89 and 81,948.66

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Solution

The fourth proportional to 149,016.66, 205,638.89 and 81,948.66 is: 113,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,016.66 : 205,638.89 = 81,948.66 : x
  2. Step 2: Convert to fraction form
    149,016.66/205,638.89 = 81,948.66/x
  3. Step 3: Cross multiply
    149,016.66x = 205,638.89 × 81,948.66
  4. Step 4: Simplify right side
    149,016.66x = 16,851,831,479.39
  5. Step 5: Solve for x
    x = 16,851,831,479.39/149,016.66
  6. Step 6: Final answer
    x = 113,086.90

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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.