Home / 149,478.68-206,283.30-81,496.20

Finding the Fourth Proportional to 149,478.68, 206,283.30 and 81,496.20

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Solution

The fourth proportional to 149,478.68, 206,283.30 and 81,496.20 is: 112,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,478.68 : 206,283.30 = 81,496.20 : x
  2. Step 2: Convert to fraction form
    149,478.68/206,283.30 = 81,496.20/x
  3. Step 3: Cross multiply
    149,478.68x = 206,283.30 × 81,496.20
  4. Step 4: Simplify right side
    149,478.68x = 16,811,305,073.46
  5. Step 5: Solve for x
    x = 16,811,305,073.46/149,478.68
  6. Step 6: Final answer
    x = 112,466.24

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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.