Home / 115,757.39-173,517.68-78,321.42

Finding the Fourth Proportional to 115,757.39, 173,517.68 and 78,321.42

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Solution

The fourth proportional to 115,757.39, 173,517.68 and 78,321.42 is: 117,402.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,757.39 : 173,517.68 = 78,321.42 : x
  2. Step 2: Convert to fraction form
    115,757.39/173,517.68 = 78,321.42/x
  3. Step 3: Cross multiply
    115,757.39x = 173,517.68 × 78,321.42
  4. Step 4: Simplify right side
    115,757.39x = 13,590,151,288.51
  5. Step 5: Solve for x
    x = 13,590,151,288.51/115,757.39
  6. Step 6: Final answer
    x = 117,402.02

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1.5x scale

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.