Home / 220,090.05-303,725.55-129,449.85

Finding the Fourth Proportional to 220,090.05, 303,725.55 and 129,449.85

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Solution

The fourth proportional to 220,090.05, 303,725.55 and 129,449.85 is: 178,641.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,090.05 : 303,725.55 = 129,449.85 : x
  2. Step 2: Convert to fraction form
    220,090.05/303,725.55 = 129,449.85/x
  3. Step 3: Cross multiply
    220,090.05x = 303,725.55 × 129,449.85
  4. Step 4: Simplify right side
    220,090.05x = 39,317,226,888.67
  5. Step 5: Solve for x
    x = 39,317,226,888.67/220,090.05
  6. Step 6: Final answer
    x = 178,641.55

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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.