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Finding the Fourth Proportional to 143,527.99, 215,152.33 and 68,628.71

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Solution

The fourth proportional to 143,527.99, 215,152.33 and 68,628.71 is: 102,876.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,527.99 : 215,152.33 = 68,628.71 : x
  2. Step 2: Convert to fraction form
    143,527.99/215,152.33 = 68,628.71/x
  3. Step 3: Cross multiply
    143,527.99x = 215,152.33 × 68,628.71
  4. Step 4: Simplify right side
    143,527.99x = 14,765,626,861.39
  5. Step 5: Solve for x
    x = 14,765,626,861.39/143,527.99
  6. Step 6: Final answer
    x = 102,876.29

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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.