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Finding the Fourth Proportional to 123,607.61, 170,581.85 and 69,900.63

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Solution

The fourth proportional to 123,607.61, 170,581.85 and 69,900.63 is: 96,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,607.61 : 170,581.85 = 69,900.63 : x
  2. Step 2: Convert to fraction form
    123,607.61/170,581.85 = 69,900.63/x
  3. Step 3: Cross multiply
    123,607.61x = 170,581.85 × 69,900.63
  4. Step 4: Simplify right side
    123,607.61x = 11,923,777,579.15
  5. Step 5: Solve for x
    x = 11,923,777,579.15/123,607.61
  6. Step 6: Final answer
    x = 96,464.75

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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.