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Finding the Fourth Proportional to 203,435.01, 280,756.94 and 112,819.41

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Solution

The fourth proportional to 203,435.01, 280,756.94 and 112,819.41 is: 155,700.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,435.01 : 280,756.94 = 112,819.41 : x
  2. Step 2: Convert to fraction form
    203,435.01/280,756.94 = 112,819.41/x
  3. Step 3: Cross multiply
    203,435.01x = 280,756.94 × 112,819.41
  4. Step 4: Simplify right side
    203,435.01x = 31,674,831,760.11
  5. Step 5: Solve for x
    x = 31,674,831,760.11/203,435.01
  6. Step 6: Final answer
    x = 155,700.00

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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.