Home / 143,756.40-198,199.54-117,819.50

Finding the Fourth Proportional to 143,756.40, 198,199.54 and 117,819.50

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Solution

The fourth proportional to 143,756.40, 198,199.54 and 117,819.50 is: 162,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,756.40 : 198,199.54 = 117,819.50 : x
  2. Step 2: Convert to fraction form
    143,756.40/198,199.54 = 117,819.50/x
  3. Step 3: Cross multiply
    143,756.40x = 198,199.54 × 117,819.50
  4. Step 4: Simplify right side
    143,756.40x = 23,351,769,859.31
  5. Step 5: Solve for x
    x = 23,351,769,859.31/143,756.40
  6. Step 6: Final answer
    x = 162,439.86

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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.