Home / 211,555.74-291,972.77-120,915.53

Finding the Fourth Proportional to 211,555.74, 291,972.77 and 120,915.53

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Solution

The fourth proportional to 211,555.74, 291,972.77 and 120,915.53 is: 166,878.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,555.74 : 291,972.77 = 120,915.53 : x
  2. Step 2: Convert to fraction form
    211,555.74/291,972.77 = 120,915.53/x
  3. Step 3: Cross multiply
    211,555.74x = 291,972.77 × 120,915.53
  4. Step 4: Simplify right side
    211,555.74x = 35,304,040,165.68
  5. Step 5: Solve for x
    x = 35,304,040,165.68/211,555.74
  6. Step 6: Final answer
    x = 166,878.20

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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.