Home / 135,308.10-203,042.31-75,386.73

Finding the Fourth Proportional to 135,308.10, 203,042.31 and 75,386.73

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Solution

The fourth proportional to 135,308.10, 203,042.31 and 75,386.73 is: 113,124.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,308.10 : 203,042.31 = 75,386.73 : x
  2. Step 2: Convert to fraction form
    135,308.10/203,042.31 = 75,386.73/x
  3. Step 3: Cross multiply
    135,308.10x = 203,042.31 × 75,386.73
  4. Step 4: Simplify right side
    135,308.10x = 15,306,695,802.55
  5. Step 5: Solve for x
    x = 15,306,695,802.55/135,308.10
  6. Step 6: Final answer
    x = 113,124.76

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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.