Home / 218,780.37-301,944.41-128,170.91

Finding the Fourth Proportional to 218,780.37, 301,944.41 and 128,170.91

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Solution

The fourth proportional to 218,780.37, 301,944.41 and 128,170.91 is: 176,891.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,780.37 : 301,944.41 = 128,170.91 : x
  2. Step 2: Convert to fraction form
    218,780.37/301,944.41 = 128,170.91/x
  3. Step 3: Cross multiply
    218,780.37x = 301,944.41 × 128,170.91
  4. Step 4: Simplify right side
    218,780.37x = 38,700,489,913.12
  5. Step 5: Solve for x
    x = 38,700,489,913.12/218,780.37
  6. Step 6: Final answer
    x = 176,891.97

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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.