Home / 421,629.03-632,535.89-122,121.81

Finding the Fourth Proportional to 421,629.03, 632,535.89 and 122,121.81

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Solution

The fourth proportional to 421,629.03, 632,535.89 and 122,121.81 is: 183,209.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,629.03 : 632,535.89 = 122,121.81 : x
  2. Step 2: Convert to fraction form
    421,629.03/632,535.89 = 122,121.81/x
  3. Step 3: Cross multiply
    421,629.03x = 632,535.89 × 122,121.81
  4. Step 4: Simplify right side
    421,629.03x = 77,246,427,166.15
  5. Step 5: Solve for x
    x = 77,246,427,166.15/421,629.03
  6. Step 6: Final answer
    x = 183,209.46

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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.