Home / 123,240.24-170,071.64-66,651.61

Finding the Fourth Proportional to 123,240.24, 170,071.64 and 66,651.61

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Solution

The fourth proportional to 123,240.24, 170,071.64 and 66,651.61 is: 91,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,240.24 : 170,071.64 = 66,651.61 : x
  2. Step 2: Convert to fraction form
    123,240.24/170,071.64 = 66,651.61/x
  3. Step 3: Cross multiply
    123,240.24x = 170,071.64 × 66,651.61
  4. Step 4: Simplify right side
    123,240.24x = 11,335,548,621.34
  5. Step 5: Solve for x
    x = 11,335,548,621.34/123,240.24
  6. Step 6: Final answer
    x = 91,979.28

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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.