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Finding the Fourth Proportional to 143,149.67, 214,657.87 and 53,129.69

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Solution

The fourth proportional to 143,149.67, 214,657.87 and 53,129.69 is: 79,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,149.67 : 214,657.87 = 53,129.69 : x
  2. Step 2: Convert to fraction form
    143,149.67/214,657.87 = 53,129.69/x
  3. Step 3: Cross multiply
    143,149.67x = 214,657.87 × 53,129.69
  4. Step 4: Simplify right side
    143,149.67x = 11,404,706,089.16
  5. Step 5: Solve for x
    x = 11,404,706,089.16/143,149.67
  6. Step 6: Final answer
    x = 79,669.80

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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.