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Finding the Fourth Proportional to 154,959.80, 231,853.02 and 91,813.76

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Solution

The fourth proportional to 154,959.80, 231,853.02 and 91,813.76 is: 137,373.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,959.80 : 231,853.02 = 91,813.76 : x
  2. Step 2: Convert to fraction form
    154,959.80/231,853.02 = 91,813.76/x
  3. Step 3: Cross multiply
    154,959.80x = 231,853.02 × 91,813.76
  4. Step 4: Simplify right side
    154,959.80x = 21,287,297,533.56
  5. Step 5: Solve for x
    x = 21,287,297,533.56/154,959.80
  6. Step 6: Final answer
    x = 137,373.03

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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.