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Finding the Fourth Proportional to 135,959.00, 203,983.47 and 72,765.05

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Solution

The fourth proportional to 135,959.00, 203,983.47 and 72,765.05 is: 109,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,959.00 : 203,983.47 = 72,765.05 : x
  2. Step 2: Convert to fraction form
    135,959.00/203,983.47 = 72,765.05/x
  3. Step 3: Cross multiply
    135,959.00x = 203,983.47 × 72,765.05
  4. Step 4: Simplify right side
    135,959.00x = 14,842,866,373.81
  5. Step 5: Solve for x
    x = 14,842,866,373.81/135,959.00
  6. Step 6: Final answer
    x = 109,171.64

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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.