Home / 102,321.12-141,203.36-57,609.12

Finding the Fourth Proportional to 102,321.12, 141,203.36 and 57,609.12

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Solution

The fourth proportional to 102,321.12, 141,203.36 and 57,609.12 is: 79,500.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,321.12 : 141,203.36 = 57,609.12 : x
  2. Step 2: Convert to fraction form
    102,321.12/141,203.36 = 57,609.12/x
  3. Step 3: Cross multiply
    102,321.12x = 141,203.36 × 57,609.12
  4. Step 4: Simplify right side
    102,321.12x = 8,134,601,310.64
  5. Step 5: Solve for x
    x = 8,134,601,310.64/102,321.12
  6. Step 6: Final answer
    x = 79,500.71

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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.