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Finding the Fourth Proportional to 162,930,991.80, 244,679,922.90 and 86,403,487.80

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Solution

The fourth proportional to 162,930,991.80, 244,679,922.90 and 86,403,487.80 is: 129,755,539.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,930,991.80 : 244,679,922.90 = 86,403,487.80 : x
  2. Step 2: Convert to fraction form
    162,930,991.80/244,679,922.90 = 86,403,487.80/x
  3. Step 3: Cross multiply
    162,930,991.80x = 244,679,922.90 × 86,403,487.80
  4. Step 4: Simplify right side
    162,930,991.80x = 21,141,198,733,195,092
  5. Step 5: Solve for x
    x = 21,141,198,733,195,092/162,930,991.80
  6. Step 6: Final answer
    x = 129,755,539.44

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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.