Home / 218,421.05-327,497.77-85,145.60

Finding the Fourth Proportional to 218,421.05, 327,497.77 and 85,145.60

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Solution

The fourth proportional to 218,421.05, 327,497.77 and 85,145.60 is: 127,666.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,421.05 : 327,497.77 = 85,145.60 : x
  2. Step 2: Convert to fraction form
    218,421.05/327,497.77 = 85,145.60/x
  3. Step 3: Cross multiply
    218,421.05x = 327,497.77 × 85,145.60
  4. Step 4: Simplify right side
    218,421.05x = 27,884,994,731.19
  5. Step 5: Solve for x
    x = 27,884,994,731.19/218,421.05
  6. Step 6: Final answer
    x = 127,666.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.