Home / 230,887.35-318,621.42-128,914.38

Finding the Fourth Proportional to 230,887.35, 318,621.42 and 128,914.38

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Solution

The fourth proportional to 230,887.35, 318,621.42 and 128,914.38 is: 177,900.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,887.35 : 318,621.42 = 128,914.38 : x
  2. Step 2: Convert to fraction form
    230,887.35/318,621.42 = 128,914.38/x
  3. Step 3: Cross multiply
    230,887.35x = 318,621.42 × 128,914.38
  4. Step 4: Simplify right side
    230,887.35x = 41,074,882,814.02
  5. Step 5: Solve for x
    x = 41,074,882,814.02/230,887.35
  6. Step 6: Final answer
    x = 177,900.10

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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.