Home / 126,582.85-174,760.13-78,900.78

Finding the Fourth Proportional to 126,582.85, 174,760.13 and 78,900.78

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Solution

The fourth proportional to 126,582.85, 174,760.13 and 78,900.78 is: 108,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,582.85 : 174,760.13 = 78,900.78 : x
  2. Step 2: Convert to fraction form
    126,582.85/174,760.13 = 78,900.78/x
  3. Step 3: Cross multiply
    126,582.85x = 174,760.13 × 78,900.78
  4. Step 4: Simplify right side
    126,582.85x = 13,788,711,422.50
  5. Step 5: Solve for x
    x = 13,788,711,422.50/126,582.85
  6. Step 6: Final answer
    x = 108,930.33

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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.