Home / 139,922.25-209,904.11-45,121.26

Finding the Fourth Proportional to 139,922.25, 209,904.11 and 45,121.26

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Solution

The fourth proportional to 139,922.25, 209,904.11 and 45,121.26 is: 67,688.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,922.25 : 209,904.11 = 45,121.26 : x
  2. Step 2: Convert to fraction form
    139,922.25/209,904.11 = 45,121.26/x
  3. Step 3: Cross multiply
    139,922.25x = 209,904.11 × 45,121.26
  4. Step 4: Simplify right side
    139,922.25x = 9,471,137,696.77
  5. Step 5: Solve for x
    x = 9,471,137,696.77/139,922.25
  6. Step 6: Final answer
    x = 67,688.57

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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.