Home / 211,459.09-291,786.66-120,820.93

Finding the Fourth Proportional to 211,459.09, 291,786.66 and 120,820.93

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Solution

The fourth proportional to 211,459.09, 291,786.66 and 120,820.93 is: 166,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,459.09 : 291,786.66 = 120,820.93 : x
  2. Step 2: Convert to fraction form
    211,459.09/291,786.66 = 120,820.93/x
  3. Step 3: Cross multiply
    211,459.09x = 291,786.66 × 120,820.93
  4. Step 4: Simplify right side
    211,459.09x = 35,253,934,163.86
  5. Step 5: Solve for x
    x = 35,253,934,163.86/211,459.09
  6. Step 6: Final answer
    x = 166,717.51

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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.