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Finding the Fourth Proportional to 117,793.88, 162,615.75 and 90,875.96

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Solution

The fourth proportional to 117,793.88, 162,615.75 and 90,875.96 is: 125,455.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,793.88 : 162,615.75 = 90,875.96 : x
  2. Step 2: Convert to fraction form
    117,793.88/162,615.75 = 90,875.96/x
  3. Step 3: Cross multiply
    117,793.88x = 162,615.75 × 90,875.96
  4. Step 4: Simplify right side
    117,793.88x = 14,777,862,359.49
  5. Step 5: Solve for x
    x = 14,777,862,359.49/117,793.88
  6. Step 6: Final answer
    x = 125,455.27

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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.