Home / 203,018.20-304,613.70-128,195.80

Finding the Fourth Proportional to 203,018.20, 304,613.70 and 128,195.80

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Solution

The fourth proportional to 203,018.20, 304,613.70 and 128,195.80 is: 192,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,018.20 : 304,613.70 = 128,195.80 : x
  2. Step 2: Convert to fraction form
    203,018.20/304,613.70 = 128,195.80/x
  3. Step 3: Cross multiply
    203,018.20x = 304,613.70 × 128,195.80
  4. Step 4: Simplify right side
    203,018.20x = 39,050,196,962.46
  5. Step 5: Solve for x
    x = 39,050,196,962.46/203,018.20
  6. Step 6: Final answer
    x = 192,348.26

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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.