Home / 149,642.89-206,511.58-81,664.24

Finding the Fourth Proportional to 149,642.89, 206,511.58 and 81,664.24

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Solution

The fourth proportional to 149,642.89, 206,511.58 and 81,664.24 is: 112,699.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,642.89 : 206,511.58 = 81,664.24 : x
  2. Step 2: Convert to fraction form
    149,642.89/206,511.58 = 81,664.24/x
  3. Step 3: Cross multiply
    149,642.89x = 206,511.58 × 81,664.24
  4. Step 4: Simplify right side
    149,642.89x = 16,864,609,883.40
  5. Step 5: Solve for x
    x = 16,864,609,883.40/149,642.89
  6. Step 6: Final answer
    x = 112,699.04

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1.5x scale

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.