Home / 115,905.90-173,815.65-80,741.10

Finding the Fourth Proportional to 115,905.90, 173,815.65 and 80,741.10

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Solution

The fourth proportional to 115,905.90, 173,815.65 and 80,741.10 is: 121,081.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,905.90 : 173,815.65 = 80,741.10 : x
  2. Step 2: Convert to fraction form
    115,905.90/173,815.65 = 80,741.10/x
  3. Step 3: Cross multiply
    115,905.90x = 173,815.65 × 80,741.10
  4. Step 4: Simplify right side
    115,905.90x = 14,034,066,778.22
  5. Step 5: Solve for x
    x = 14,034,066,778.22/115,905.90
  6. Step 6: Final answer
    x = 121,081.56

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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.