Home / 149,932.68-206,900.10-81,953.16

Finding the Fourth Proportional to 149,932.68, 206,900.10 and 81,953.16

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Solution

The fourth proportional to 149,932.68, 206,900.10 and 81,953.16 is: 113,091.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,932.68 : 206,900.10 = 81,953.16 : x
  2. Step 2: Convert to fraction form
    149,932.68/206,900.10 = 81,953.16/x
  3. Step 3: Cross multiply
    149,932.68x = 206,900.10 × 81,953.16
  4. Step 4: Simplify right side
    149,932.68x = 16,956,116,999.32
  5. Step 5: Solve for x
    x = 16,956,116,999.32/149,932.68
  6. Step 6: Final answer
    x = 113,091.54

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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.