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Finding the Fourth Proportional to 67,181.42, 100,179.42 and 66,581.84

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Solution

The fourth proportional to 67,181.42, 100,179.42 and 66,581.84 is: 99,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,181.42 : 100,179.42 = 66,581.84 : x
  2. Step 2: Convert to fraction form
    67,181.42/100,179.42 = 66,581.84/x
  3. Step 3: Cross multiply
    67,181.42x = 100,179.42 × 66,581.84
  4. Step 4: Simplify right side
    67,181.42x = 6,670,130,113.73
  5. Step 5: Solve for x
    x = 6,670,130,113.73/67,181.42
  6. Step 6: Final answer
    x = 99,285.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.