Home / 230,914.50-318,633.85-128,945.62

Finding the Fourth Proportional to 230,914.50, 318,633.85 and 128,945.62

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Solution

The fourth proportional to 230,914.50, 318,633.85 and 128,945.62 is: 177,929.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,914.50 : 318,633.85 = 128,945.62 : x
  2. Step 2: Convert to fraction form
    230,914.50/318,633.85 = 128,945.62/x
  3. Step 3: Cross multiply
    230,914.50x = 318,633.85 × 128,945.62
  4. Step 4: Simplify right side
    230,914.50x = 41,086,439,900.71
  5. Step 5: Solve for x
    x = 41,086,439,900.71/230,914.50
  6. Step 6: Final answer
    x = 177,929.24

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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.