Home / 115,665.18-173,499-40,771.36

Finding the Fourth Proportional to 115,665.18, 173,499 and 40,771.36

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Solution

The fourth proportional to 115,665.18, 173,499 and 40,771.36 is: 61,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,665.18 : 173,499 = 40,771.36 : x
  2. Step 2: Convert to fraction form
    115,665.18/173,499 = 40,771.36/x
  3. Step 3: Cross multiply
    115,665.18x = 173,499 × 40,771.36
  4. Step 4: Simplify right side
    115,665.18x = 7,073,790,188.64
  5. Step 5: Solve for x
    x = 7,073,790,188.64/115,665.18
  6. Step 6: Final answer
    x = 61,157.47

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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.