Home / 142,719.84-196,959.87-79,057.64

Finding the Fourth Proportional to 142,719.84, 196,959.87 and 79,057.64

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Solution

The fourth proportional to 142,719.84, 196,959.87 and 79,057.64 is: 109,103.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,719.84 : 196,959.87 = 79,057.64 : x
  2. Step 2: Convert to fraction form
    142,719.84/196,959.87 = 79,057.64/x
  3. Step 3: Cross multiply
    142,719.84x = 196,959.87 × 79,057.64
  4. Step 4: Simplify right side
    142,719.84x = 15,571,182,989.31
  5. Step 5: Solve for x
    x = 15,571,182,989.31/142,719.84
  6. Step 6: Final answer
    x = 109,103.14

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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.