Home / 123,144.09-169,935.45-69,428.64

Finding the Fourth Proportional to 123,144.09, 169,935.45 and 69,428.64

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Solution

The fourth proportional to 123,144.09, 169,935.45 and 69,428.64 is: 95,809.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,144.09 : 169,935.45 = 69,428.64 : x
  2. Step 2: Convert to fraction form
    123,144.09/169,935.45 = 69,428.64/x
  3. Step 3: Cross multiply
    123,144.09x = 169,935.45 × 69,428.64
  4. Step 4: Simplify right side
    123,144.09x = 11,798,387,181.29
  5. Step 5: Solve for x
    x = 11,798,387,181.29/123,144.09
  6. Step 6: Final answer
    x = 95,809.61

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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.