Home / 143,320.64-197,789.19-79,659.50

Finding the Fourth Proportional to 143,320.64, 197,789.19 and 79,659.50

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Solution

The fourth proportional to 143,320.64, 197,789.19 and 79,659.50 is: 109,933.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,320.64 : 197,789.19 = 79,659.50 : x
  2. Step 2: Convert to fraction form
    143,320.64/197,789.19 = 79,659.50/x
  3. Step 3: Cross multiply
    143,320.64x = 197,789.19 × 79,659.50
  4. Step 4: Simplify right side
    143,320.64x = 15,755,787,980.81
  5. Step 5: Solve for x
    x = 15,755,787,980.81/143,320.64
  6. Step 6: Final answer
    x = 109,933.84

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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.