Home / 100,907.72-139,252.82-55,585.85

Finding the Fourth Proportional to 100,907.72, 139,252.82 and 55,585.85

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Solution

The fourth proportional to 100,907.72, 139,252.82 and 55,585.85 is: 76,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,907.72 : 139,252.82 = 55,585.85 : x
  2. Step 2: Convert to fraction form
    100,907.72/139,252.82 = 55,585.85/x
  3. Step 3: Cross multiply
    100,907.72x = 139,252.82 × 55,585.85
  4. Step 4: Simplify right side
    100,907.72x = 7,740,485,703.07
  5. Step 5: Solve for x
    x = 7,740,485,703.07/100,907.72
  6. Step 6: Final answer
    x = 76,708.55

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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.