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Finding the Fourth Proportional to 123,644.79, 170,627.79 and 69,927.79

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Solution

The fourth proportional to 123,644.79, 170,627.79 and 69,927.79 is: 96,499.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,644.79 : 170,627.79 = 69,927.79 : x
  2. Step 2: Convert to fraction form
    123,644.79/170,627.79 = 69,927.79/x
  3. Step 3: Cross multiply
    123,644.79x = 170,627.79 × 69,927.79
  4. Step 4: Simplify right side
    123,644.79x = 11,931,624,267.28
  5. Step 5: Solve for x
    x = 11,931,624,267.28/123,644.79
  6. Step 6: Final answer
    x = 96,499.21

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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.