Home / 165,787.70-228,787.02-90,336.20

Finding the Fourth Proportional to 165,787.70, 228,787.02 and 90,336.20

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Solution

The fourth proportional to 165,787.70, 228,787.02 and 90,336.20 is: 124,663.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,787.70 : 228,787.02 = 90,336.20 : x
  2. Step 2: Convert to fraction form
    165,787.70/228,787.02 = 90,336.20/x
  3. Step 3: Cross multiply
    165,787.70x = 228,787.02 × 90,336.20
  4. Step 4: Simplify right side
    165,787.70x = 20,667,749,996.12
  5. Step 5: Solve for x
    x = 20,667,749,996.12/165,787.70
  6. Step 6: Final answer
    x = 124,663.95

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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.