Home / 143,426.64-197,933.64-78,898.62

Finding the Fourth Proportional to 143,426.64, 197,933.64 and 78,898.62

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Solution

The fourth proportional to 143,426.64, 197,933.64 and 78,898.62 is: 108,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,426.64 : 197,933.64 = 78,898.62 : x
  2. Step 2: Convert to fraction form
    143,426.64/197,933.64 = 78,898.62/x
  3. Step 3: Cross multiply
    143,426.64x = 197,933.64 × 78,898.62
  4. Step 4: Simplify right side
    143,426.64x = 15,616,691,047.58
  5. Step 5: Solve for x
    x = 15,616,691,047.58/143,426.64
  6. Step 6: Final answer
    x = 108,882.78

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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.