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Finding the Fourth Proportional to 99,690,167.80, 149,555,469.30 and 56,580,023.80

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Solution

The fourth proportional to 99,690,167.80, 149,555,469.30 and 56,580,023.80 is: 84,881,510.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,690,167.80 : 149,555,469.30 = 56,580,023.80 : x
  2. Step 2: Convert to fraction form
    99,690,167.80/149,555,469.30 = 56,580,023.80/x
  3. Step 3: Cross multiply
    99,690,167.80x = 149,555,469.30 × 56,580,023.80
  4. Step 4: Simplify right side
    99,690,167.80x = 8,461,852,012,414,170
  5. Step 5: Solve for x
    x = 8,461,852,012,414,170/99,690,167.80
  6. Step 6: Final answer
    x = 84,881,510.38

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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.