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Finding the Fourth Proportional to 143,980.80, 198,689.04 and 80,329.38

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Solution

The fourth proportional to 143,980.80, 198,689.04 and 80,329.38 is: 110,852.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,980.80 : 198,689.04 = 80,329.38 : x
  2. Step 2: Convert to fraction form
    143,980.80/198,689.04 = 80,329.38/x
  3. Step 3: Cross multiply
    143,980.80x = 198,689.04 × 80,329.38
  4. Step 4: Simplify right side
    143,980.80x = 15,960,567,396.00
  5. Step 5: Solve for x
    x = 15,960,567,396.00/143,980.80
  6. Step 6: Final answer
    x = 110,852.05

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1.5x scale

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.