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Finding the Fourth Proportional to 99,696,008.80, 149,292,070.80 and 79,540,616.80

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Solution

The fourth proportional to 99,696,008.80, 149,292,070.80 and 79,540,616.80 is: 119,109,917.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696,008.80 : 149,292,070.80 = 79,540,616.80 : x
  2. Step 2: Convert to fraction form
    99,696,008.80/149,292,070.80 = 79,540,616.80/x
  3. Step 3: Cross multiply
    99,696,008.80x = 149,292,070.80 × 79,540,616.80
  4. Step 4: Simplify right side
    99,696,008.80x = 11,874,783,394,781,270
  5. Step 5: Solve for x
    x = 11,874,783,394,781,270/99,696,008.80
  6. Step 6: Final answer
    x = 119,109,917.62

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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.