Home / 135,784.20-203,676.30-72,798.60

Finding the Fourth Proportional to 135,784.20, 203,676.30 and 72,798.60

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Solution

The fourth proportional to 135,784.20, 203,676.30 and 72,798.60 is: 109,197.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,784.20 : 203,676.30 = 72,798.60 : x
  2. Step 2: Convert to fraction form
    135,784.20/203,676.30 = 72,798.60/x
  3. Step 3: Cross multiply
    135,784.20x = 203,676.30 × 72,798.60
  4. Step 4: Simplify right side
    135,784.20x = 14,827,349,493.18
  5. Step 5: Solve for x
    x = 14,827,349,493.18/135,784.20
  6. Step 6: Final answer
    x = 109,197.90

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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.