Home / 128,231,821.08-176,863,089.78-80,560,936.44

Finding the Fourth Proportional to 128,231,821.08, 176,863,089.78 and 80,560,936.44

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Solution

The fourth proportional to 128,231,821.08, 176,863,089.78 and 80,560,936.44 is: 111,113,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,231,821.08 : 176,863,089.78 = 80,560,936.44 : x
  2. Step 2: Convert to fraction form
    128,231,821.08/176,863,089.78 = 80,560,936.44/x
  3. Step 3: Cross multiply
    128,231,821.08x = 176,863,089.78 × 80,560,936.44
  4. Step 4: Simplify right side
    128,231,821.08x = 14,248,256,134,348,594
  5. Step 5: Solve for x
    x = 14,248,256,134,348,594/128,231,821.08
  6. Step 6: Final answer
    x = 111,113,263.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.