Home / 215,426.60-323,139.90-136,629.80

Finding the Fourth Proportional to 215,426.60, 323,139.90 and 136,629.80

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Solution

The fourth proportional to 215,426.60, 323,139.90 and 136,629.80 is: 204,944.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,426.60 : 323,139.90 = 136,629.80 : x
  2. Step 2: Convert to fraction form
    215,426.60/323,139.90 = 136,629.80/x
  3. Step 3: Cross multiply
    215,426.60x = 323,139.90 × 136,629.80
  4. Step 4: Simplify right side
    215,426.60x = 44,150,539,909.02
  5. Step 5: Solve for x
    x = 44,150,539,909.02/215,426.60
  6. Step 6: Final answer
    x = 204,944.70

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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.