Home / 165,680.32-228,641.28-90,228.64

Finding the Fourth Proportional to 165,680.32, 228,641.28 and 90,228.64

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Solution

The fourth proportional to 165,680.32, 228,641.28 and 90,228.64 is: 124,516.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,680.32 : 228,641.28 = 90,228.64 : x
  2. Step 2: Convert to fraction form
    165,680.32/228,641.28 = 90,228.64/x
  3. Step 3: Cross multiply
    165,680.32x = 228,641.28 × 90,228.64
  4. Step 4: Simplify right side
    165,680.32x = 20,629,991,742.26
  5. Step 5: Solve for x
    x = 20,629,991,742.26/165,680.32
  6. Step 6: Final answer
    x = 124,516.85

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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.