Home / 154,130.87-231,195.21-79,271.88

Finding the Fourth Proportional to 154,130.87, 231,195.21 and 79,271.88

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Solution

The fourth proportional to 154,130.87, 231,195.21 and 79,271.88 is: 118,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,130.87 : 231,195.21 = 79,271.88 : x
  2. Step 2: Convert to fraction form
    154,130.87/231,195.21 = 79,271.88/x
  3. Step 3: Cross multiply
    154,130.87x = 231,195.21 × 79,271.88
  4. Step 4: Simplify right side
    154,130.87x = 18,327,278,943.69
  5. Step 5: Solve for x
    x = 18,327,278,943.69/154,130.87
  6. Step 6: Final answer
    x = 118,907.26

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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.