Home / 149,705.33-206,593.88-81,723.80

Finding the Fourth Proportional to 149,705.33, 206,593.88 and 81,723.80

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Solution

The fourth proportional to 149,705.33, 206,593.88 and 81,723.80 is: 112,779.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,705.33 : 206,593.88 = 81,723.80 : x
  2. Step 2: Convert to fraction form
    149,705.33/206,593.88 = 81,723.80/x
  3. Step 3: Cross multiply
    149,705.33x = 206,593.88 × 81,723.80
  4. Step 4: Simplify right side
    149,705.33x = 16,883,637,038.21
  5. Step 5: Solve for x
    x = 16,883,637,038.21/149,705.33
  6. Step 6: Final answer
    x = 112,779.13

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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.