Home / 143,679.69-198,284.12-80,017.49

Finding the Fourth Proportional to 143,679.69, 198,284.12 and 80,017.49

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Solution

The fourth proportional to 143,679.69, 198,284.12 and 80,017.49 is: 110,427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,679.69 : 198,284.12 = 80,017.49 : x
  2. Step 2: Convert to fraction form
    143,679.69/198,284.12 = 80,017.49/x
  3. Step 3: Cross multiply
    143,679.69x = 198,284.12 × 80,017.49
  4. Step 4: Simplify right side
    143,679.69x = 15,866,197,319.70
  5. Step 5: Solve for x
    x = 15,866,197,319.70/143,679.69
  6. Step 6: Final answer
    x = 110,427.56

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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.