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Finding the Fourth Proportional to 89,195.88, 133,810.52 and 72,700.44

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Solution

The fourth proportional to 89,195.88, 133,810.52 and 72,700.44 is: 109,064.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,195.88 : 133,810.52 = 72,700.44 : x
  2. Step 2: Convert to fraction form
    89,195.88/133,810.52 = 72,700.44/x
  3. Step 3: Cross multiply
    89,195.88x = 133,810.52 × 72,700.44
  4. Step 4: Simplify right side
    89,195.88x = 9,728,083,680.63
  5. Step 5: Solve for x
    x = 9,728,083,680.63/89,195.88
  6. Step 6: Final answer
    x = 109,064.27

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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.