Home / 154,122.90-231,138.27-80,210.58

Finding the Fourth Proportional to 154,122.90, 231,138.27 and 80,210.58

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Solution

The fourth proportional to 154,122.90, 231,138.27 and 80,210.58 is: 120,291.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,122.90 : 231,138.27 = 80,210.58 : x
  2. Step 2: Convert to fraction form
    154,122.90/231,138.27 = 80,210.58/x
  3. Step 3: Cross multiply
    154,122.90x = 231,138.27 × 80,210.58
  4. Step 4: Simplify right side
    154,122.90x = 18,539,734,696.90
  5. Step 5: Solve for x
    x = 18,539,734,696.90/154,122.90
  6. Step 6: Final answer
    x = 120,291.89

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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.