Home / 220,200.67-303,862.53-129,539.10

Finding the Fourth Proportional to 220,200.67, 303,862.53 and 129,539.10

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Solution

The fourth proportional to 220,200.67, 303,862.53 and 129,539.10 is: 178,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,200.67 : 303,862.53 = 129,539.10 : x
  2. Step 2: Convert to fraction form
    220,200.67/303,862.53 = 129,539.10/x
  3. Step 3: Cross multiply
    220,200.67x = 303,862.53 × 129,539.10
  4. Step 4: Simplify right side
    220,200.67x = 39,362,078,659.92
  5. Step 5: Solve for x
    x = 39,362,078,659.92/220,200.67
  6. Step 6: Final answer
    x = 178,755.49

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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.