Home / 230,891.07-318,626.40-128,918.16

Finding the Fourth Proportional to 230,891.07, 318,626.40 and 128,918.16

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Solution

The fourth proportional to 230,891.07, 318,626.40 and 128,918.16 is: 177,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,891.07 : 318,626.40 = 128,918.16 : x
  2. Step 2: Convert to fraction form
    230,891.07/318,626.40 = 128,918.16/x
  3. Step 3: Cross multiply
    230,891.07x = 318,626.40 × 128,918.16
  4. Step 4: Simplify right side
    230,891.07x = 41,076,729,215.42
  5. Step 5: Solve for x
    x = 41,076,729,215.42/230,891.07
  6. Step 6: Final answer
    x = 177,905.23

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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.