Home / 129,558.54-178,796.33-72,197.94

Finding the Fourth Proportional to 129,558.54, 178,796.33 and 72,197.94

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Solution

The fourth proportional to 129,558.54, 178,796.33 and 72,197.94 is: 99,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,558.54 : 178,796.33 = 72,197.94 : x
  2. Step 2: Convert to fraction form
    129,558.54/178,796.33 = 72,197.94/x
  3. Step 3: Cross multiply
    129,558.54x = 178,796.33 × 72,197.94
  4. Step 4: Simplify right side
    129,558.54x = 12,908,726,705.56
  5. Step 5: Solve for x
    x = 12,908,726,705.56/129,558.54
  6. Step 6: Final answer
    x = 99,636.25

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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.