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Finding the Fourth Proportional to 143,077.84, 214,827.42 and 80,021.50

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Solution

The fourth proportional to 143,077.84, 214,827.42 and 80,021.50 is: 120,150.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,077.84 : 214,827.42 = 80,021.50 : x
  2. Step 2: Convert to fraction form
    143,077.84/214,827.42 = 80,021.50/x
  3. Step 3: Cross multiply
    143,077.84x = 214,827.42 × 80,021.50
  4. Step 4: Simplify right side
    143,077.84x = 17,190,812,389.53
  5. Step 5: Solve for x
    x = 17,190,812,389.53/143,077.84
  6. Step 6: Final answer
    x = 120,150.07

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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.