Home / 165,905.28-228,948.93-90,453.78

Finding the Fourth Proportional to 165,905.28, 228,948.93 and 90,453.78

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Solution

The fourth proportional to 165,905.28, 228,948.93 and 90,453.78 is: 124,826.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,905.28 : 228,948.93 = 90,453.78 : x
  2. Step 2: Convert to fraction form
    165,905.28/228,948.93 = 90,453.78/x
  3. Step 3: Cross multiply
    165,905.28x = 228,948.93 × 90,453.78
  4. Step 4: Simplify right side
    165,905.28x = 20,709,296,145.46
  5. Step 5: Solve for x
    x = 20,709,296,145.46/165,905.28
  6. Step 6: Final answer
    x = 124,826.02

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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.