Home / 230,887.55-318,621.69-128,914.58

Finding the Fourth Proportional to 230,887.55, 318,621.69 and 128,914.58

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Solution

The fourth proportional to 230,887.55, 318,621.69 and 128,914.58 is: 177,900.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,887.55 : 318,621.69 = 128,914.58 : x
  2. Step 2: Convert to fraction form
    230,887.55/318,621.69 = 128,914.58/x
  3. Step 3: Cross multiply
    230,887.55x = 318,621.69 × 128,914.58
  4. Step 4: Simplify right side
    230,887.55x = 41,074,979,752.13
  5. Step 5: Solve for x
    x = 41,074,979,752.13/230,887.55
  6. Step 6: Final answer
    x = 177,900.37

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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.