Home / 71,445.64-107,168.85-18,137.65

Finding the Fourth Proportional to 71,445.64, 107,168.85 and 18,137.65

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Solution

The fourth proportional to 71,445.64, 107,168.85 and 18,137.65 is: 27,206.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,445.64 : 107,168.85 = 18,137.65 : x
  2. Step 2: Convert to fraction form
    71,445.64/107,168.85 = 18,137.65/x
  3. Step 3: Cross multiply
    71,445.64x = 107,168.85 × 18,137.65
  4. Step 4: Simplify right side
    71,445.64x = 1,943,791,092.20
  5. Step 5: Solve for x
    x = 1,943,791,092.20/71,445.64
  6. Step 6: Final answer
    x = 27,206.57

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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.