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Finding the Fourth Proportional to 89.99, 125.04 and 88.84

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Solution

The fourth proportional to 89.99, 125.04 and 88.84 is: 123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    89.99 : 125.04 = 88.84 : x
  2. Step 2: Convert to fraction form
    89.99/125.04 = 88.84/x
  3. Step 3: Cross multiply
    89.99x = 125.04 × 88.84
  4. Step 4: Simplify right side
    89.99x = 11,108.24
  5. Step 5: Solve for x
    x = 11,108.24/89.99
  6. Step 6: Final answer
    x = 123.45

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.