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Finding the Fourth Proportional to 123,365.88, 170,244.99 and 69,651

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Solution

The fourth proportional to 123,365.88, 170,244.99 and 69,651 is: 96,118.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,365.88 : 170,244.99 = 69,651 : x
  2. Step 2: Convert to fraction form
    123,365.88/170,244.99 = 69,651/x
  3. Step 3: Cross multiply
    123,365.88x = 170,244.99 × 69,651
  4. Step 4: Simplify right side
    123,365.88x = 11,857,733,798.49
  5. Step 5: Solve for x
    x = 11,857,733,798.49/123,365.88
  6. Step 6: Final answer
    x = 96,118.42

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1.5x scale

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.