Home / 129,640.54-178,897.52-73,055.56

Finding the Fourth Proportional to 129,640.54, 178,897.52 and 73,055.56

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Solution

The fourth proportional to 129,640.54, 178,897.52 and 73,055.56 is: 100,813.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,640.54 : 178,897.52 = 73,055.56 : x
  2. Step 2: Convert to fraction form
    129,640.54/178,897.52 = 73,055.56/x
  3. Step 3: Cross multiply
    129,640.54x = 178,897.52 × 73,055.56
  4. Step 4: Simplify right side
    129,640.54x = 13,069,458,506.21
  5. Step 5: Solve for x
    x = 13,069,458,506.21/129,640.54
  6. Step 6: Final answer
    x = 100,813.05

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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.