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Finding the Fourth Proportional to 143,816.80, 215,264.40 and 77,092.96

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Solution

The fourth proportional to 143,816.80, 215,264.40 and 77,092.96 is: 115,392.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,816.80 : 215,264.40 = 77,092.96 : x
  2. Step 2: Convert to fraction form
    143,816.80/215,264.40 = 77,092.96/x
  3. Step 3: Cross multiply
    143,816.80x = 215,264.40 × 77,092.96
  4. Step 4: Simplify right side
    143,816.80x = 16,595,369,778.62
  5. Step 5: Solve for x
    x = 16,595,369,778.62/143,816.80
  6. Step 6: Final answer
    x = 115,392.43

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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.