Home / 142,732.80-196,983.36-79,090.56

Finding the Fourth Proportional to 142,732.80, 196,983.36 and 79,090.56

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Solution

The fourth proportional to 142,732.80, 196,983.36 and 79,090.56 is: 109,151.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,732.80 : 196,983.36 = 79,090.56 : x
  2. Step 2: Convert to fraction form
    142,732.80/196,983.36 = 79,090.56/x
  3. Step 3: Cross multiply
    142,732.80x = 196,983.36 × 79,090.56
  4. Step 4: Simplify right side
    142,732.80x = 15,579,524,253.08
  5. Step 5: Solve for x
    x = 15,579,524,253.08/142,732.80
  6. Step 6: Final answer
    x = 109,151.68

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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.