Home / 215,636.12-323,345.64-125,707.76

Finding the Fourth Proportional to 215,636.12, 323,345.64 and 125,707.76

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Solution

The fourth proportional to 215,636.12, 323,345.64 and 125,707.76 is: 188,498.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,636.12 : 323,345.64 = 125,707.76 : x
  2. Step 2: Convert to fraction form
    215,636.12/323,345.64 = 125,707.76/x
  3. Step 3: Cross multiply
    215,636.12x = 323,345.64 × 125,707.76
  4. Step 4: Simplify right side
    215,636.12x = 40,647,056,110.17
  5. Step 5: Solve for x
    x = 40,647,056,110.17/215,636.12
  6. Step 6: Final answer
    x = 188,498.37

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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.