Home / 149,443.64-206,229.56-81,461.20

Finding the Fourth Proportional to 149,443.64, 206,229.56 and 81,461.20

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Solution

The fourth proportional to 149,443.64, 206,229.56 and 81,461.20 is: 112,415.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,443.64 : 206,229.56 = 81,461.20 : x
  2. Step 2: Convert to fraction form
    149,443.64/206,229.56 = 81,461.20/x
  3. Step 3: Cross multiply
    149,443.64x = 206,229.56 × 81,461.20
  4. Step 4: Simplify right side
    149,443.64x = 16,799,707,121.15
  5. Step 5: Solve for x
    x = 16,799,707,121.15/149,443.64
  6. Step 6: Final answer
    x = 112,415.00

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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.