Home / 220,143.20-329,777.40-120,124.40

Finding the Fourth Proportional to 220,143.20, 329,777.40 and 120,124.40

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Solution

The fourth proportional to 220,143.20, 329,777.40 and 120,124.40 is: 179,947.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,143.20 : 329,777.40 = 120,124.40 : x
  2. Step 2: Convert to fraction form
    220,143.20/329,777.40 = 120,124.40/x
  3. Step 3: Cross multiply
    220,143.20x = 329,777.40 × 120,124.40
  4. Step 4: Simplify right side
    220,143.20x = 39,614,312,308.56
  5. Step 5: Solve for x
    x = 39,614,312,308.56/220,143.20
  6. Step 6: Final answer
    x = 179,947.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.