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Finding the Fourth Proportional to 254,066.87, 381,100.31 and 67,079.99

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Solution

The fourth proportional to 254,066.87, 381,100.31 and 67,079.99 is: 100,619.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,066.87 : 381,100.31 = 67,079.99 : x
  2. Step 2: Convert to fraction form
    254,066.87/381,100.31 = 67,079.99/x
  3. Step 3: Cross multiply
    254,066.87x = 381,100.31 × 67,079.99
  4. Step 4: Simplify right side
    254,066.87x = 25,564,202,742.90
  5. Step 5: Solve for x
    x = 25,564,202,742.90/254,066.87
  6. Step 6: Final answer
    x = 100,619.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.