Home / 154,475.20-231,421.20-79,339.60

Finding the Fourth Proportional to 154,475.20, 231,421.20 and 79,339.60

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Solution

The fourth proportional to 154,475.20, 231,421.20 and 79,339.60 is: 118,859.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,475.20 : 231,421.20 = 79,339.60 : x
  2. Step 2: Convert to fraction form
    154,475.20/231,421.20 = 79,339.60/x
  3. Step 3: Cross multiply
    154,475.20x = 231,421.20 × 79,339.60
  4. Step 4: Simplify right side
    154,475.20x = 18,360,865,439.52
  5. Step 5: Solve for x
    x = 18,360,865,439.52/154,475.20
  6. Step 6: Final answer
    x = 118,859.63

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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.