Home / 118,961.60-178,559.04-90,618.08

Finding the Fourth Proportional to 118,961.60, 178,559.04 and 90,618.08

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Solution

The fourth proportional to 118,961.60, 178,559.04 and 90,618.08 is: 136,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,961.60 : 178,559.04 = 90,618.08 : x
  2. Step 2: Convert to fraction form
    118,961.60/178,559.04 = 90,618.08/x
  3. Step 3: Cross multiply
    118,961.60x = 178,559.04 × 90,618.08
  4. Step 4: Simplify right side
    118,961.60x = 16,180,677,371.44
  5. Step 5: Solve for x
    x = 16,180,677,371.44/118,961.60
  6. Step 6: Final answer
    x = 136,015.97

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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.