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Finding the Fourth Proportional to 177,187,781.80, 265,781,672.70 and 81,449,669.80

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Solution

The fourth proportional to 177,187,781.80, 265,781,672.70 and 81,449,669.80 is: 122,174,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,187,781.80 : 265,781,672.70 = 81,449,669.80 : x
  2. Step 2: Convert to fraction form
    177,187,781.80/265,781,672.70 = 81,449,669.80/x
  3. Step 3: Cross multiply
    177,187,781.80x = 265,781,672.70 × 81,449,669.80
  4. Step 4: Simplify right side
    177,187,781.80x = 21,647,829,480,306,672
  5. Step 5: Solve for x
    x = 21,647,829,480,306,672/177,187,781.80
  6. Step 6: Final answer
    x = 122,174,504.70

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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.