Home / 149,373.79-206,133.23-81,391.32

Finding the Fourth Proportional to 149,373.79, 206,133.23 and 81,391.32

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Solution

The fourth proportional to 149,373.79, 206,133.23 and 81,391.32 is: 112,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,373.79 : 206,133.23 = 81,391.32 : x
  2. Step 2: Convert to fraction form
    149,373.79/206,133.23 = 81,391.32/x
  3. Step 3: Cross multiply
    149,373.79x = 206,133.23 × 81,391.32
  4. Step 4: Simplify right side
    149,373.79x = 16,777,455,889.04
  5. Step 5: Solve for x
    x = 16,777,455,889.04/149,373.79
  6. Step 6: Final answer
    x = 112,318.61

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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.