Home / 230,011.30-317,435.52-128,072.80

Finding the Fourth Proportional to 230,011.30, 317,435.52 and 128,072.80

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Solution

The fourth proportional to 230,011.30, 317,435.52 and 128,072.80 is: 176,751.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,011.30 : 317,435.52 = 128,072.80 : x
  2. Step 2: Convert to fraction form
    230,011.30/317,435.52 = 128,072.80/x
  3. Step 3: Cross multiply
    230,011.30x = 317,435.52 × 128,072.80
  4. Step 4: Simplify right side
    230,011.30x = 40,654,855,865.86
  5. Step 5: Solve for x
    x = 40,654,855,865.86/230,011.30
  6. Step 6: Final answer
    x = 176,751.56

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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.