Home / 454,621.82-681,907.94-139,078.74

Finding the Fourth Proportional to 454,621.82, 681,907.94 and 139,078.74

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Solution

The fourth proportional to 454,621.82, 681,907.94 and 139,078.74 is: 208,610.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,621.82 : 681,907.94 = 139,078.74 : x
  2. Step 2: Convert to fraction form
    454,621.82/681,907.94 = 139,078.74/x
  3. Step 3: Cross multiply
    454,621.82x = 681,907.94 × 139,078.74
  4. Step 4: Simplify right side
    454,621.82x = 94,838,897,091.20
  5. Step 5: Solve for x
    x = 94,838,897,091.20/454,621.82
  6. Step 6: Final answer
    x = 208,610.53

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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.