Home / 454,629.70-681,971.85-139,089.34

Finding the Fourth Proportional to 454,629.70, 681,971.85 and 139,089.34

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Solution

The fourth proportional to 454,629.70, 681,971.85 and 139,089.34 is: 208,642.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,629.70 : 681,971.85 = 139,089.34 : x
  2. Step 2: Convert to fraction form
    454,629.70/681,971.85 = 139,089.34/x
  3. Step 3: Cross multiply
    454,629.70x = 681,971.85 × 139,089.34
  4. Step 4: Simplify right side
    454,629.70x = 94,855,014,515.08
  5. Step 5: Solve for x
    x = 94,855,014,515.08/454,629.70
  6. Step 6: Final answer
    x = 208,642.36

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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.