Home / 165,585.12-228,511.92-90,136.80

Finding the Fourth Proportional to 165,585.12, 228,511.92 and 90,136.80

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Solution

The fourth proportional to 165,585.12, 228,511.92 and 90,136.80 is: 124,391.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,585.12 : 228,511.92 = 90,136.80 : x
  2. Step 2: Convert to fraction form
    165,585.12/228,511.92 = 90,136.80/x
  3. Step 3: Cross multiply
    165,585.12x = 228,511.92 × 90,136.80
  4. Step 4: Simplify right side
    165,585.12x = 20,597,333,230.66
  5. Step 5: Solve for x
    x = 20,597,333,230.66/165,585.12
  6. Step 6: Final answer
    x = 124,391.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.