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Finding the Fourth Proportional to 143,145.30, 200,679.90 and 143,145.30

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Solution

The fourth proportional to 143,145.30, 200,679.90 and 143,145.30 is: 200,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,145.30 : 200,679.90 = 143,145.30 : x
  2. Step 2: Convert to fraction form
    143,145.30/200,679.90 = 143,145.30/x
  3. Step 3: Cross multiply
    143,145.30x = 200,679.90 × 143,145.30
  4. Step 4: Simplify right side
    143,145.30x = 28,726,384,489.47
  5. Step 5: Solve for x
    x = 28,726,384,489.47/143,145.30
  6. Step 6: Final answer
    x = 200,679.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.