Home / 90,110.53-135,205.33-42,759.85

Finding the Fourth Proportional to 90,110.53, 135,205.33 and 42,759.85

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Solution

The fourth proportional to 90,110.53, 135,205.33 and 42,759.85 is: 64,158.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,110.53 : 135,205.33 = 42,759.85 : x
  2. Step 2: Convert to fraction form
    90,110.53/135,205.33 = 42,759.85/x
  3. Step 3: Cross multiply
    90,110.53x = 135,205.33 × 42,759.85
  4. Step 4: Simplify right side
    90,110.53x = 5,781,359,630.00
  5. Step 5: Solve for x
    x = 5,781,359,630.00/90,110.53
  6. Step 6: Final answer
    x = 64,158.54

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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.