Home / 211,149.12-291,390.48-120,503.28

Finding the Fourth Proportional to 211,149.12, 291,390.48 and 120,503.28

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Solution

The fourth proportional to 211,149.12, 291,390.48 and 120,503.28 is: 166,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,149.12 : 291,390.48 = 120,503.28 : x
  2. Step 2: Convert to fraction form
    211,149.12/291,390.48 = 120,503.28/x
  3. Step 3: Cross multiply
    211,149.12x = 291,390.48 × 120,503.28
  4. Step 4: Simplify right side
    211,149.12x = 35,113,508,600.77
  5. Step 5: Solve for x
    x = 35,113,508,600.77/211,149.12
  6. Step 6: Final answer
    x = 166,297.21

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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.