Home / 142,246.20-196,298.28-78,579.84

Finding the Fourth Proportional to 142,246.20, 196,298.28 and 78,579.84

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Solution

The fourth proportional to 142,246.20, 196,298.28 and 78,579.84 is: 108,439.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,246.20 : 196,298.28 = 78,579.84 : x
  2. Step 2: Convert to fraction form
    142,246.20/196,298.28 = 78,579.84/x
  3. Step 3: Cross multiply
    142,246.20x = 196,298.28 × 78,579.84
  4. Step 4: Simplify right side
    142,246.20x = 15,425,087,434.68
  5. Step 5: Solve for x
    x = 15,425,087,434.68/142,246.20
  6. Step 6: Final answer
    x = 108,439.36

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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.