Home / 129,735.12-178,993.62-102,425.16

Finding the Fourth Proportional to 129,735.12, 178,993.62 and 102,425.16

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Solution

The fourth proportional to 129,735.12, 178,993.62 and 102,425.16 is: 141,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,735.12 : 178,993.62 = 102,425.16 : x
  2. Step 2: Convert to fraction form
    129,735.12/178,993.62 = 102,425.16/x
  3. Step 3: Cross multiply
    129,735.12x = 178,993.62 × 102,425.16
  4. Step 4: Simplify right side
    129,735.12x = 18,333,450,167.48
  5. Step 5: Solve for x
    x = 18,333,450,167.48/129,735.12
  6. Step 6: Final answer
    x = 141,314.47

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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.