Home / 203,289.12-280,585.80-135,308.79

Finding the Fourth Proportional to 203,289.12, 280,585.80 and 135,308.79

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Solution

The fourth proportional to 203,289.12, 280,585.80 and 135,308.79 is: 186,757.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,289.12 : 280,585.80 = 135,308.79 : x
  2. Step 2: Convert to fraction form
    203,289.12/280,585.80 = 135,308.79/x
  3. Step 3: Cross multiply
    203,289.12x = 280,585.80 × 135,308.79
  4. Step 4: Simplify right side
    203,289.12x = 37,965,725,089.18
  5. Step 5: Solve for x
    x = 37,965,725,089.18/203,289.12
  6. Step 6: Final answer
    x = 186,757.29

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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.