Home / 99,515.54-148,863.20-90,756.60

Finding the Fourth Proportional to 99,515.54, 148,863.20 and 90,756.60

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Solution

The fourth proportional to 99,515.54, 148,863.20 and 90,756.60 is: 135,760.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,515.54 : 148,863.20 = 90,756.60 : x
  2. Step 2: Convert to fraction form
    99,515.54/148,863.20 = 90,756.60/x
  3. Step 3: Cross multiply
    99,515.54x = 148,863.20 × 90,756.60
  4. Step 4: Simplify right side
    99,515.54x = 13,510,317,897.12
  5. Step 5: Solve for x
    x = 13,510,317,897.12/99,515.54
  6. Step 6: Final answer
    x = 135,760.89

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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.