Home / 149,731.12-206,630.94-81,747.31

Finding the Fourth Proportional to 149,731.12, 206,630.94 and 81,747.31

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Solution

The fourth proportional to 149,731.12, 206,630.94 and 81,747.31 is: 112,812.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,731.12 : 206,630.94 = 81,747.31 : x
  2. Step 2: Convert to fraction form
    149,731.12/206,630.94 = 81,747.31/x
  3. Step 3: Cross multiply
    149,731.12x = 206,630.94 × 81,747.31
  4. Step 4: Simplify right side
    149,731.12x = 16,891,523,507.77
  5. Step 5: Solve for x
    x = 16,891,523,507.77/149,731.12
  6. Step 6: Final answer
    x = 112,812.38

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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.