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Finding the Fourth Proportional to 115,880.77, 173,523.88 and 80,291.53

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Solution

The fourth proportional to 115,880.77, 173,523.88 and 80,291.53 is: 120,231.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,880.77 : 173,523.88 = 80,291.53 : x
  2. Step 2: Convert to fraction form
    115,880.77/173,523.88 = 80,291.53/x
  3. Step 3: Cross multiply
    115,880.77x = 173,523.88 × 80,291.53
  4. Step 4: Simplify right side
    115,880.77x = 13,932,496,547.66
  5. Step 5: Solve for x
    x = 13,932,496,547.66/115,880.77
  6. Step 6: Final answer
    x = 120,231.31

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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.