Home / 230,984.85-318,738.35-128,996.15

Finding the Fourth Proportional to 230,984.85, 318,738.35 and 128,996.15

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Solution

The fourth proportional to 230,984.85, 318,738.35 and 128,996.15 is: 178,003.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,984.85 : 318,738.35 = 128,996.15 : x
  2. Step 2: Convert to fraction form
    230,984.85/318,738.35 = 128,996.15/x
  3. Step 3: Cross multiply
    230,984.85x = 318,738.35 × 128,996.15
  4. Step 4: Simplify right side
    230,984.85x = 41,116,020,007.35
  5. Step 5: Solve for x
    x = 41,116,020,007.35/230,984.85
  6. Step 6: Final answer
    x = 178,003.10

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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.