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Finding the Fourth Proportional to 143,135.90, 214,266.45 and 143,135.90

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Solution

The fourth proportional to 143,135.90, 214,266.45 and 143,135.90 is: 214,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,135.90 : 214,266.45 = 143,135.90 : x
  2. Step 2: Convert to fraction form
    143,135.90/214,266.45 = 143,135.90/x
  3. Step 3: Cross multiply
    143,135.90x = 214,266.45 × 143,135.90
  4. Step 4: Simplify right side
    143,135.90x = 30,669,221,160.56
  5. Step 5: Solve for x
    x = 30,669,221,160.56/143,135.90
  6. Step 6: Final answer
    x = 214,266.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.