Home / 149,739.02-206,638.66-81,755.01

Finding the Fourth Proportional to 149,739.02, 206,638.66 and 81,755.01

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Solution

The fourth proportional to 149,739.02, 206,638.66 and 81,755.01 is: 112,821.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,739.02 : 206,638.66 = 81,755.01 : x
  2. Step 2: Convert to fraction form
    149,739.02/206,638.66 = 81,755.01/x
  3. Step 3: Cross multiply
    149,739.02x = 206,638.66 × 81,755.01
  4. Step 4: Simplify right side
    149,739.02x = 16,893,745,714.69
  5. Step 5: Solve for x
    x = 16,893,745,714.69/149,739.02
  6. Step 6: Final answer
    x = 112,821.27

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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.