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Finding the Fourth Proportional to 143,140.30, 200,672.90 and 143,140.30

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Solution

The fourth proportional to 143,140.30, 200,672.90 and 143,140.30 is: 200,672.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.30 : 200,672.90 = 143,140.30 : x
  2. Step 2: Convert to fraction form
    143,140.30/200,672.90 = 143,140.30/x
  3. Step 3: Cross multiply
    143,140.30x = 200,672.90 × 143,140.30
  4. Step 4: Simplify right side
    143,140.30x = 28,724,379,107.87
  5. Step 5: Solve for x
    x = 28,724,379,107.87/143,140.30
  6. Step 6: Final answer
    x = 200,672.90

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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.