Home / 220,076.57-303,706.91-129,436.35

Finding the Fourth Proportional to 220,076.57, 303,706.91 and 129,436.35

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Solution

The fourth proportional to 220,076.57, 303,706.91 and 129,436.35 is: 178,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,076.57 : 303,706.91 = 129,436.35 : x
  2. Step 2: Convert to fraction form
    220,076.57/303,706.91 = 129,436.35/x
  3. Step 3: Cross multiply
    220,076.57x = 303,706.91 × 129,436.35
  4. Step 4: Simplify right side
    220,076.57x = 39,310,713,253.00
  5. Step 5: Solve for x
    x = 39,310,713,253.00/220,076.57
  6. Step 6: Final answer
    x = 178,622.90

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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.