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Finding the Fourth Proportional to 189,385.48, 284,186.76 and 77,044.96

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Solution

The fourth proportional to 189,385.48, 284,186.76 and 77,044.96 is: 115,611.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,385.48 : 284,186.76 = 77,044.96 : x
  2. Step 2: Convert to fraction form
    189,385.48/284,186.76 = 77,044.96/x
  3. Step 3: Cross multiply
    189,385.48x = 284,186.76 × 77,044.96
  4. Step 4: Simplify right side
    189,385.48x = 21,895,157,556.73
  5. Step 5: Solve for x
    x = 21,895,157,556.73/189,385.48
  6. Step 6: Final answer
    x = 115,611.60

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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.