Home / 165,787.22-228,786.45-90,335.72

Finding the Fourth Proportional to 165,787.22, 228,786.45 and 90,335.72

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Solution

The fourth proportional to 165,787.22, 228,786.45 and 90,335.72 is: 124,663.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,787.22 : 228,786.45 = 90,335.72 : x
  2. Step 2: Convert to fraction form
    165,787.22/228,786.45 = 90,335.72/x
  3. Step 3: Cross multiply
    165,787.22x = 228,786.45 × 90,335.72
  4. Step 4: Simplify right side
    165,787.22x = 20,667,588,686.99
  5. Step 5: Solve for x
    x = 20,667,588,686.99/165,787.22
  6. Step 6: Final answer
    x = 124,663.34

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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.