Home / 149,243.20-205,948.92-81,258.46

Finding the Fourth Proportional to 149,243.20, 205,948.92 and 81,258.46

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Solution

The fourth proportional to 149,243.20, 205,948.92 and 81,258.46 is: 112,133.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,243.20 : 205,948.92 = 81,258.46 : x
  2. Step 2: Convert to fraction form
    149,243.20/205,948.92 = 81,258.46/x
  3. Step 3: Cross multiply
    149,243.20x = 205,948.92 × 81,258.46
  4. Step 4: Simplify right side
    149,243.20x = 16,735,092,077.86
  5. Step 5: Solve for x
    x = 16,735,092,077.86/149,243.20
  6. Step 6: Final answer
    x = 112,133.03

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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.