Home / 129,548.25-178,821.32-75,850.52

Finding the Fourth Proportional to 129,548.25, 178,821.32 and 75,850.52

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Solution

The fourth proportional to 129,548.25, 178,821.32 and 75,850.52 is: 104,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,548.25 : 178,821.32 = 75,850.52 : x
  2. Step 2: Convert to fraction form
    129,548.25/178,821.32 = 75,850.52/x
  3. Step 3: Cross multiply
    129,548.25x = 178,821.32 × 75,850.52
  4. Step 4: Simplify right side
    129,548.25x = 13,563,688,835.73
  5. Step 5: Solve for x
    x = 13,563,688,835.73/129,548.25
  6. Step 6: Final answer
    x = 104,699.90

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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.