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Finding the Fourth Proportional to 123,148.75, 169,945.51 and 69,433.64

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Solution

The fourth proportional to 123,148.75, 169,945.51 and 69,433.64 is: 95,818.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,148.75 : 169,945.51 = 69,433.64 : x
  2. Step 2: Convert to fraction form
    123,148.75/169,945.51 = 69,433.64/x
  3. Step 3: Cross multiply
    123,148.75x = 169,945.51 × 69,433.64
  4. Step 4: Simplify right side
    123,148.75x = 11,799,935,360.96
  5. Step 5: Solve for x
    x = 11,799,935,360.96/123,148.75
  6. Step 6: Final answer
    x = 95,818.56

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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.