Home / 230,914.75-318,634.20-128,945.87

Finding the Fourth Proportional to 230,914.75, 318,634.20 and 128,945.87

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Solution

The fourth proportional to 230,914.75, 318,634.20 and 128,945.87 is: 177,929.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,914.75 : 318,634.20 = 128,945.87 : x
  2. Step 2: Convert to fraction form
    230,914.75/318,634.20 = 128,945.87/x
  3. Step 3: Cross multiply
    230,914.75x = 318,634.20 × 128,945.87
  4. Step 4: Simplify right side
    230,914.75x = 41,086,564,282.61
  5. Step 5: Solve for x
    x = 41,086,564,282.61/230,914.75
  6. Step 6: Final answer
    x = 177,929.58

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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.