Home / 105,720.24-158,540.85-42,519.03

Finding the Fourth Proportional to 105,720.24, 158,540.85 and 42,519.03

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Solution

The fourth proportional to 105,720.24, 158,540.85 and 42,519.03 is: 63,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720.24 : 158,540.85 = 42,519.03 : x
  2. Step 2: Convert to fraction form
    105,720.24/158,540.85 = 42,519.03/x
  3. Step 3: Cross multiply
    105,720.24x = 158,540.85 × 42,519.03
  4. Step 4: Simplify right side
    105,720.24x = 6,741,003,157.38
  5. Step 5: Solve for x
    x = 6,741,003,157.38/105,720.24
  6. Step 6: Final answer
    x = 63,762.65

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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.