Home / 118,909.44-178,222.01-90,609.66

Finding the Fourth Proportional to 118,909.44, 178,222.01 and 90,609.66

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Solution

The fourth proportional to 118,909.44, 178,222.01 and 90,609.66 is: 135,806.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,909.44 : 178,222.01 = 90,609.66 : x
  2. Step 2: Convert to fraction form
    118,909.44/178,222.01 = 90,609.66/x
  3. Step 3: Cross multiply
    118,909.44x = 178,222.01 × 90,609.66
  4. Step 4: Simplify right side
    118,909.44x = 16,148,635,277.57
  5. Step 5: Solve for x
    x = 16,148,635,277.57/118,909.44
  6. Step 6: Final answer
    x = 135,806.17

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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.