Home / 117,420,512.80-176,130,769.20-81,588,704.80

Finding the Fourth Proportional to 117,420,512.80, 176,130,769.20 and 81,588,704.80

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Solution

The fourth proportional to 117,420,512.80, 176,130,769.20 and 81,588,704.80 is: 122,383,057.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,420,512.80 : 176,130,769.20 = 81,588,704.80 : x
  2. Step 2: Convert to fraction form
    117,420,512.80/176,130,769.20 = 81,588,704.80/x
  3. Step 3: Cross multiply
    117,420,512.80x = 176,130,769.20 × 81,588,704.80
  4. Step 4: Simplify right side
    117,420,512.80x = 14,370,281,334,455,730
  5. Step 5: Solve for x
    x = 14,370,281,334,455,730/117,420,512.80
  6. Step 6: Final answer
    x = 122,383,057.20

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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.