Home / 136,591.21-204,500.43-72,403.09

Finding the Fourth Proportional to 136,591.21, 204,500.43 and 72,403.09

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Solution

The fourth proportional to 136,591.21, 204,500.43 and 72,403.09 is: 108,399.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,591.21 : 204,500.43 = 72,403.09 : x
  2. Step 2: Convert to fraction form
    136,591.21/204,500.43 = 72,403.09/x
  3. Step 3: Cross multiply
    136,591.21x = 204,500.43 × 72,403.09
  4. Step 4: Simplify right side
    136,591.21x = 14,806,463,038.33
  5. Step 5: Solve for x
    x = 14,806,463,038.33/136,591.21
  6. Step 6: Final answer
    x = 108,399.83

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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.