Home / 149,199.56-205,898.01-81,218.48

Finding the Fourth Proportional to 149,199.56, 205,898.01 and 81,218.48

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Solution

The fourth proportional to 149,199.56, 205,898.01 and 81,218.48 is: 112,082.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,199.56 : 205,898.01 = 81,218.48 : x
  2. Step 2: Convert to fraction form
    149,199.56/205,898.01 = 81,218.48/x
  3. Step 3: Cross multiply
    149,199.56x = 205,898.01 × 81,218.48
  4. Step 4: Simplify right side
    149,199.56x = 16,722,723,407.22
  5. Step 5: Solve for x
    x = 16,722,723,407.22/149,199.56
  6. Step 6: Final answer
    x = 112,082.93

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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.