Home / 149,862.20-206,800.50-81,865.40

Finding the Fourth Proportional to 149,862.20, 206,800.50 and 81,865.40

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Solution

The fourth proportional to 149,862.20, 206,800.50 and 81,865.40 is: 112,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,862.20 : 206,800.50 = 81,865.40 : x
  2. Step 2: Convert to fraction form
    149,862.20/206,800.50 = 81,865.40/x
  3. Step 3: Cross multiply
    149,862.20x = 206,800.50 × 81,865.40
  4. Step 4: Simplify right side
    149,862.20x = 16,929,805,652.70
  5. Step 5: Solve for x
    x = 16,929,805,652.70/149,862.20
  6. Step 6: Final answer
    x = 112,969.15

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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.