Home / 101,205.72-139,665.04-55,883.64

Finding the Fourth Proportional to 101,205.72, 139,665.04 and 55,883.64

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Solution

The fourth proportional to 101,205.72, 139,665.04 and 55,883.64 is: 77,120.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,205.72 : 139,665.04 = 55,883.64 : x
  2. Step 2: Convert to fraction form
    101,205.72/139,665.04 = 55,883.64/x
  3. Step 3: Cross multiply
    101,205.72x = 139,665.04 × 55,883.64
  4. Step 4: Simplify right side
    101,205.72x = 7,804,990,815.95
  5. Step 5: Solve for x
    x = 7,804,990,815.95/101,205.72
  6. Step 6: Final answer
    x = 77,120.06

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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.