Home / 230,954.27-318,713.53-128,978.65

Finding the Fourth Proportional to 230,954.27, 318,713.53 and 128,978.65

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Solution

The fourth proportional to 230,954.27, 318,713.53 and 128,978.65 is: 177,988.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,954.27 : 318,713.53 = 128,978.65 : x
  2. Step 2: Convert to fraction form
    230,954.27/318,713.53 = 128,978.65/x
  3. Step 3: Cross multiply
    230,954.27x = 318,713.53 × 128,978.65
  4. Step 4: Simplify right side
    230,954.27x = 41,107,240,191.24
  5. Step 5: Solve for x
    x = 41,107,240,191.24/230,954.27
  6. Step 6: Final answer
    x = 177,988.66

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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.