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Finding the Fourth Proportional to 99,079.53, 148,531.81 and 75,809.85

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Solution

The fourth proportional to 99,079.53, 148,531.81 and 75,809.85 is: 113,647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,079.53 : 148,531.81 = 75,809.85 : x
  2. Step 2: Convert to fraction form
    99,079.53/148,531.81 = 75,809.85/x
  3. Step 3: Cross multiply
    99,079.53x = 148,531.81 × 75,809.85
  4. Step 4: Simplify right side
    99,079.53x = 11,260,174,236.33
  5. Step 5: Solve for x
    x = 11,260,174,236.33/99,079.53
  6. Step 6: Final answer
    x = 113,647.84

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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.