Home / 143,482.24-198,000-79,817.92

Finding the Fourth Proportional to 143,482.24, 198,000 and 79,817.92

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Solution

The fourth proportional to 143,482.24, 198,000 and 79,817.92 is: 110,145.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,482.24 : 198,000 = 79,817.92 : x
  2. Step 2: Convert to fraction form
    143,482.24/198,000 = 79,817.92/x
  3. Step 3: Cross multiply
    143,482.24x = 198,000 × 79,817.92
  4. Step 4: Simplify right side
    143,482.24x = 15,803,948,160
  5. Step 5: Solve for x
    x = 15,803,948,160/143,482.24
  6. Step 6: Final answer
    x = 110,145.67

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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.