Home / 291,153.12-436,729.90-80,791.26

Finding the Fourth Proportional to 291,153.12, 436,729.90 and 80,791.26

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Solution

The fourth proportional to 291,153.12, 436,729.90 and 80,791.26 is: 121,186.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,153.12 : 436,729.90 = 80,791.26 : x
  2. Step 2: Convert to fraction form
    291,153.12/436,729.90 = 80,791.26/x
  3. Step 3: Cross multiply
    291,153.12x = 436,729.90 × 80,791.26
  4. Step 4: Simplify right side
    291,153.12x = 35,283,958,900.67
  5. Step 5: Solve for x
    x = 35,283,958,900.67/291,153.12
  6. Step 6: Final answer
    x = 121,186.95

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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.