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Finding the Fourth Proportional to 124,825, 172,258.50 and 68,236.78

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Solution

The fourth proportional to 124,825, 172,258.50 and 68,236.78 is: 94,166.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,825 : 172,258.50 = 68,236.78 : x
  2. Step 2: Convert to fraction form
    124,825/172,258.50 = 68,236.78/x
  3. Step 3: Cross multiply
    124,825x = 172,258.50 × 68,236.78
  4. Step 4: Simplify right side
    124,825x = 11,754,365,367.63
  5. Step 5: Solve for x
    x = 11,754,365,367.63/124,825
  6. Step 6: Final answer
    x = 94,166.76

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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.