Home / 220,187.11-303,858.80-129,546.49

Finding the Fourth Proportional to 220,187.11, 303,858.80 and 129,546.49

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Solution

The fourth proportional to 220,187.11, 303,858.80 and 129,546.49 is: 178,774.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,187.11 : 303,858.80 = 129,546.49 : x
  2. Step 2: Convert to fraction form
    220,187.11/303,858.80 = 129,546.49/x
  3. Step 3: Cross multiply
    220,187.11x = 303,858.80 × 129,546.49
  4. Step 4: Simplify right side
    220,187.11x = 39,363,840,995.61
  5. Step 5: Solve for x
    x = 39,363,840,995.61/220,187.11
  6. Step 6: Final answer
    x = 178,774.50

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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.