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Finding the Fourth Proportional to 149,680.50, 206,559.36 and 82,612.50

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Solution

The fourth proportional to 149,680.50, 206,559.36 and 82,612.50 is: 114,005.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,680.50 : 206,559.36 = 82,612.50 : x
  2. Step 2: Convert to fraction form
    149,680.50/206,559.36 = 82,612.50/x
  3. Step 3: Cross multiply
    149,680.50x = 206,559.36 × 82,612.50
  4. Step 4: Simplify right side
    149,680.50x = 17,064,385,128.00
  5. Step 5: Solve for x
    x = 17,064,385,128.00/149,680.50
  6. Step 6: Final answer
    x = 114,005.40

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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.