Home / 220,087.08-303,721.40-129,446.84

Finding the Fourth Proportional to 220,087.08, 303,721.40 and 129,446.84

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Solution

The fourth proportional to 220,087.08, 303,721.40 and 129,446.84 is: 178,637.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,087.08 : 303,721.40 = 129,446.84 : x
  2. Step 2: Convert to fraction form
    220,087.08/303,721.40 = 129,446.84/x
  3. Step 3: Cross multiply
    220,087.08x = 303,721.40 × 129,446.84
  4. Step 4: Simplify right side
    220,087.08x = 39,315,775,470.38
  5. Step 5: Solve for x
    x = 39,315,775,470.38/220,087.08
  6. Step 6: Final answer
    x = 178,637.36

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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.