Home / 154,271.56-231,621.50-79,445.20

Finding the Fourth Proportional to 154,271.56, 231,621.50 and 79,445.20

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Solution

The fourth proportional to 154,271.56, 231,621.50 and 79,445.20 is: 119,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,271.56 : 231,621.50 = 79,445.20 : x
  2. Step 2: Convert to fraction form
    154,271.56/231,621.50 = 79,445.20/x
  3. Step 3: Cross multiply
    154,271.56x = 231,621.50 × 79,445.20
  4. Step 4: Simplify right side
    154,271.56x = 18,401,216,391.80
  5. Step 5: Solve for x
    x = 18,401,216,391.80/154,271.56
  6. Step 6: Final answer
    x = 119,278.09

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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.