Home / 220,142.80-329,825.40-136,939.60

Finding the Fourth Proportional to 220,142.80, 329,825.40 and 136,939.60

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Solution

The fourth proportional to 220,142.80, 329,825.40 and 136,939.60 is: 205,167.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,142.80 : 329,825.40 = 136,939.60 : x
  2. Step 2: Convert to fraction form
    220,142.80/329,825.40 = 136,939.60/x
  3. Step 3: Cross multiply
    220,142.80x = 329,825.40 × 136,939.60
  4. Step 4: Simplify right side
    220,142.80x = 45,166,158,345.84
  5. Step 5: Solve for x
    x = 45,166,158,345.84/220,142.80
  6. Step 6: Final answer
    x = 205,167.55

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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.