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Finding the Fourth Proportional to 126,552, 174,644.80 and 81,917.76

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Solution

The fourth proportional to 126,552, 174,644.80 and 81,917.76 is: 113,048.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,552 : 174,644.80 = 81,917.76 : x
  2. Step 2: Convert to fraction form
    126,552/174,644.80 = 81,917.76/x
  3. Step 3: Cross multiply
    126,552x = 174,644.80 × 81,917.76
  4. Step 4: Simplify right side
    126,552x = 14,306,510,811.65
  5. Step 5: Solve for x
    x = 14,306,510,811.65/126,552
  6. Step 6: Final answer
    x = 113,048.48

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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.