Home / 142,741.20-196,984.44-79,080

Finding the Fourth Proportional to 142,741.20, 196,984.44 and 79,080

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Solution

The fourth proportional to 142,741.20, 196,984.44 and 79,080 is: 109,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,741.20 : 196,984.44 = 79,080 : x
  2. Step 2: Convert to fraction form
    142,741.20/196,984.44 = 79,080/x
  3. Step 3: Cross multiply
    142,741.20x = 196,984.44 × 79,080
  4. Step 4: Simplify right side
    142,741.20x = 15,577,529,515.20
  5. Step 5: Solve for x
    x = 15,577,529,515.20/142,741.20
  6. Step 6: Final answer
    x = 109,131.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.