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Finding the Fourth Proportional to 143,131.47, 214,697.21 and 54,363.98

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Solution

The fourth proportional to 143,131.47, 214,697.21 and 54,363.98 is: 81,545.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,131.47 : 214,697.21 = 54,363.98 : x
  2. Step 2: Convert to fraction form
    143,131.47/214,697.21 = 54,363.98/x
  3. Step 3: Cross multiply
    143,131.47x = 214,697.21 × 54,363.98
  4. Step 4: Simplify right side
    143,131.47x = 11,671,793,485.19
  5. Step 5: Solve for x
    x = 11,671,793,485.19/143,131.47
  6. Step 6: Final answer
    x = 81,545.96

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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.