Home / 154,583.80-231,746.10-80,711.80

Finding the Fourth Proportional to 154,583.80, 231,746.10 and 80,711.80

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Solution

The fourth proportional to 154,583.80, 231,746.10 and 80,711.80 is: 121,000.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,583.80 : 231,746.10 = 80,711.80 : x
  2. Step 2: Convert to fraction form
    154,583.80/231,746.10 = 80,711.80/x
  3. Step 3: Cross multiply
    154,583.80x = 231,746.10 × 80,711.80
  4. Step 4: Simplify right side
    154,583.80x = 18,704,644,873.98
  5. Step 5: Solve for x
    x = 18,704,644,873.98/154,583.80
  6. Step 6: Final answer
    x = 121,000.03

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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.