Home / 120,018.42-165,626.64-83,772.54

Finding the Fourth Proportional to 120,018.42, 165,626.64 and 83,772.54

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Solution

The fourth proportional to 120,018.42, 165,626.64 and 83,772.54 is: 115,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,018.42 : 165,626.64 = 83,772.54 : x
  2. Step 2: Convert to fraction form
    120,018.42/165,626.64 = 83,772.54/x
  3. Step 3: Cross multiply
    120,018.42x = 165,626.64 × 83,772.54
  4. Step 4: Simplify right side
    120,018.42x = 13,874,964,324.47
  5. Step 5: Solve for x
    x = 13,874,964,324.47/120,018.42
  6. Step 6: Final answer
    x = 115,606.96

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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.