Home / 220,170.15-303,810.75-129,555.45

Finding the Fourth Proportional to 220,170.15, 303,810.75 and 129,555.45

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Solution

The fourth proportional to 220,170.15, 303,810.75 and 129,555.45 is: 178,772.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,170.15 : 303,810.75 = 129,555.45 : x
  2. Step 2: Convert to fraction form
    220,170.15/303,810.75 = 129,555.45/x
  3. Step 3: Cross multiply
    220,170.15x = 303,810.75 × 129,555.45
  4. Step 4: Simplify right side
    220,170.15x = 39,360,338,431.09
  5. Step 5: Solve for x
    x = 39,360,338,431.09/220,170.15
  6. Step 6: Final answer
    x = 178,772.37

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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.