Home / 211,575.53-291,994-120,913.78

Finding the Fourth Proportional to 211,575.53, 291,994 and 120,913.78

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Solution

The fourth proportional to 211,575.53, 291,994 and 120,913.78 is: 166,872.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,575.53 : 291,994 = 120,913.78 : x
  2. Step 2: Convert to fraction form
    211,575.53/291,994 = 120,913.78/x
  3. Step 3: Cross multiply
    211,575.53x = 291,994 × 120,913.78
  4. Step 4: Simplify right side
    211,575.53x = 35,306,098,277.32
  5. Step 5: Solve for x
    x = 35,306,098,277.32/211,575.53
  6. Step 6: Final answer
    x = 166,872.31

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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.