Home / 230,529.12-318,131.57-128,561.02

Finding the Fourth Proportional to 230,529.12, 318,131.57 and 128,561.02

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Solution

The fourth proportional to 230,529.12, 318,131.57 and 128,561.02 is: 177,414.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,529.12 : 318,131.57 = 128,561.02 : x
  2. Step 2: Convert to fraction form
    230,529.12/318,131.57 = 128,561.02/x
  3. Step 3: Cross multiply
    230,529.12x = 318,131.57 × 128,561.02
  4. Step 4: Simplify right side
    230,529.12x = 40,899,318,490.60
  5. Step 5: Solve for x
    x = 40,899,318,490.60/230,529.12
  6. Step 6: Final answer
    x = 177,414.98

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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.