Home / 99,081.40-148,534.62-75,811.72

Finding the Fourth Proportional to 99,081.40, 148,534.62 and 75,811.72

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Solution

The fourth proportional to 99,081.40, 148,534.62 and 75,811.72 is: 113,650.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,081.40 : 148,534.62 = 75,811.72 : x
  2. Step 2: Convert to fraction form
    99,081.40/148,534.62 = 75,811.72/x
  3. Step 3: Cross multiply
    99,081.40x = 148,534.62 × 75,811.72
  4. Step 4: Simplify right side
    99,081.40x = 11,260,665,021.75
  5. Step 5: Solve for x
    x = 11,260,665,021.75/99,081.40
  6. Step 6: Final answer
    x = 113,650.65

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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.