Home / 126,497.70-174,647.34-78,821.10

Finding the Fourth Proportional to 126,497.70, 174,647.34 and 78,821.10

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Solution

The fourth proportional to 126,497.70, 174,647.34 and 78,821.10 is: 108,823.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,497.70 : 174,647.34 = 78,821.10 : x
  2. Step 2: Convert to fraction form
    126,497.70/174,647.34 = 78,821.10/x
  3. Step 3: Cross multiply
    126,497.70x = 174,647.34 × 78,821.10
  4. Step 4: Simplify right side
    126,497.70x = 13,765,895,450.87
  5. Step 5: Solve for x
    x = 13,765,895,450.87/126,497.70
  6. Step 6: Final answer
    x = 108,823.29

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1.5x scale

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.