Home / 230,550.85-318,159.54-128,576.42

Finding the Fourth Proportional to 230,550.85, 318,159.54 and 128,576.42

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Solution

The fourth proportional to 230,550.85, 318,159.54 and 128,576.42 is: 177,435.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,550.85 : 318,159.54 = 128,576.42 : x
  2. Step 2: Convert to fraction form
    230,550.85/318,159.54 = 128,576.42/x
  3. Step 3: Cross multiply
    230,550.85x = 318,159.54 × 128,576.42
  4. Step 4: Simplify right side
    230,550.85x = 40,907,814,642.05
  5. Step 5: Solve for x
    x = 40,907,814,642.05/230,550.85
  6. Step 6: Final answer
    x = 177,435.11

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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.